St Mirren manager Danny Lennon has a number of injury concerns to contend with as he prepares for the visit of Dundee United this weekend.
Jim Goodwin's calf complaint makes him 'touch and go' and he will be handed a late test before a decision is made on his participation.
Gary Teale is making a good recovery from his abductor problem and Steven Thompson (groin) also comes into contention, but Lee Mair is out with a stomach injury and could miss the League Cup final on Sunday week.
Thompson admitted that the team have to remain focused on the SPL this weekend with the Hampden showdown against Hearts looming next weekend.
"We obviously have the game against Dundee United and have to show a reaction to losing to Dundee during the week, to give belief and confidence back to the supporters for next weekend," he said.
"But there is no doubt you would be lying if you said you weren't thinking of next weekend. It has certainly been at the forefront of my mind for quite some time."
Dundee United could hand a debut to new signing Rory Boulding for the trip to Paisley.
The former Livingston striker has signed until the end of the season as cover after Johnny Russell was ruled out with a fractured leg.
Swedish defender Marcus Tornstrand could also feature with Gavin Gunning ruled out with an injured knee.
The 24-year-old failed to make a first-team appearance at Newcastle before his permanent move to Celtic last year, following two loan deals at the Parkhead club.
However, he has forced his way into the England squad this season, thanks in part to the Hoops' remarkable Champions League campaign which saw them make the last-16 before exiting to Juventus in Turin on Wednesday night.
Forster is one of several players who could be subject to bids from interested clubs in the summer.
Speaking ahead of the Clydesdale Bank Premier League match against Ross County in Dingwall tomorrow, he said: "It is definitely one of my ambitions at some point to play down south, I think it is everyone's ambition at some point to test themselves in the Premier League and we will just have to wait and see if it happens.
"We have an ambitious squad and you can't blame them if they want to go and fulfill ambitions elsewhere.
"For me, it is key to stay in and around the England squad.
"I have got the taste of it. I want to push Joe Hart in the long run but Ben Foster has come our of retirement in the last couple of weeks and he is obviously a fantastic keeper.
"But it is important that I am playing and being tested week-in, week-out."
A formidable Tynecastle strike pair of John Sutton and Michael Ngoo proved too much for Saints on Tuesday as Hearts secured a 2-0 win in Edinburgh and the Perth side missed the chance to move third in the Scottish Premier League.
Kilmarnock are likely to prove a different prospect with their passing style but the bumpy McDiarmid Park pitch might force them to change their tactics.
And Davidson knows they have to be prepared for any eventuality after manager Steve Lomas described them as "second best all over the pitch" on Tuesday.
"It really hasn't happened too often this season," Davidson said.
"Hearts had a game plan which we couldn't quite handle and we didn't really adapt well enough.
"I think the effort and commitment was there but the quality when we didn't have the ball was probably lacking.
"It's one of those things that you have to work on.
"You come across different teams all the time, different formations and different style of play, and you have got to adapt to them all."
Former Saints striker Cillian Sheridan could provide a similar challenge to the likes of Sutton but Davidson expects a different encounter.
"Cillian will probably be involved and obviously Kris Boyd played for the under-20s the other night and they are two physical players," the former Scotland international said.
"Kilmarnock like to throw it out from the back a little bit more so it will be a different game.
"We have got to make sure we are up for it and are prepared the best we can be."
Despite the setback in Edinburgh, St Johnstone are in the driving seat in their bid to finish in the top six and can put six points between themselves and Killie tomorrow.
"The next three games we have got are must-wins," Davidson said.
"That was our first defeat in four. You can't just take one game - you have to look at them all as a whole.
"It's about how we bounce back from the game."
The midfielder left the club for Rangers in 2007 but has been training with Pat Fenlon's squad since his release by Middlesbrough in January.
Now the Leith boss is eager to sign up the 28-year-old Scotland international in time for the Scottish Premier League meeting with their city rivals in two days' time.
Fenlon said: "Kevin has made the decision that he wants to play here until the end of the season.
"That's fantastic and we're delighted. The deal hasn't been done yet and obviously with it being outside the transfer window it takes a bit longer to do than a normal transfer.
"If we can get it done in time for Sunday then great, if not we have got plenty of players. The squad we have got at the moment is fantastic and Kevin will enhance it, I've no doubt."
Thomson has endured a nightmare spell since quitting Ibrox for the Riverside two-and-a-half years ago.
The player, who had already suffered two cruciate ligament injuries before heading to the npower Championship side, broke his leg just two games after sealing his £2million move to Boro.
Further injury problems limited Thomson to just 44 games in his first two seasons with the club and his contract was torn up by mutual consent just minutes before the end of the January transfer window.
But Fenlon has no concerns, saying: "The plus point from our side is that Kevin has been in for a couple of weeks and liked what he saw. He's enjoyed it. He's got on really well with the players and the staff. Now he's made the decision he wants to come here for a short period of time, which is great.
"Fitness-wise, he looks fine but he hasn't played much so you when you get into the nitty gritty of playing football matches, it's completely different to training. But from a fitness point of view, he looks fine."
Fenlon had earlier denied Hibs were looking to re-sign the player, claiming cash constraints had tied his hands.
But it now looks as though the player has volunteered to play for reduced terms in order to speed his return to full fitness.
"Nothing has changed on our finances," said Fenlon. "Kevin has made a decision that he wants to play football between now and the end of the season to get himself fit for something bigger further down the road.
"Has he dropped his demands? That sort of thing is between him and the club. I'm just a manager trying to get the best out of the team and he becomes part of that now."
While Thomson will hope to get the paperwork sorted soon so he can taste some of the action against Hearts, Leith teenager Alex Harris is praying the club make a fast start and allow him to experience his first top-team clash with the Jambos.
The 18-year-old midfielder was a late substitute in last weekend's 4-2 Scottish Cup quarter-final win over Kilmarnock.
It was his third appearance for the Edinburgh outfit, but the only way he reckons he get on against the Gorgie men is if Hibs run riot early doors.
He said: "My chances of playing probably aren't the best after last week's result but you never know with an injury or whatever.
"The result comes first and maybe if we're doing well, I might get a chance at the end. We're unbeaten against Hearts this season, so three or four goals would be great and allow me to get on!
"It would be great to make my first appearance in a derby match. I've been surprised to get some game time over the last few weeks. But it's come at the right time with the derby on Sunday."
The boyhood Hibs fan actually grew up on the doorstep of their Edinburgh neighbours' and admits he has taken his fair share of stick since Hearts 5-1 Scottish Cup final triumph last may.
A win tomorrow would soothe the wounds inflicted by those painful barbs, though.
"I'm from the west of the city, near Gorgie. Growing up, I've had to put up with Hearts fans going past my door after their home games," he added.
"I remember when they had their cup final parade in the summer - I made sure I was well out of the area that day.
"It wasn't the best result last year. I've seen a few Hearts fans since when I've been out with my Hibs tracksuit on and they've given me a few 5-1 shouts.
"It's not been too bad, though. I've enjoyed the banter. We're in the semi-finals this year, so hopefully this will be our time. We're also unbeaten against Hearts this year so hopefully that continues."
