Birmingham have signed free agent Tom Adeyemi on a two-year contract.
The midfielder, who left Norwich at the end of last season, is familiar to Lee Clark from the City manager's time as a coach at Carrow Road.
Clark told Birmingham's official website: "I worked with him during my time at Norwich when he was a youngster at the club.
"I've followed his progress since, He's done exceptionally well on loan at a few different clubs and I'm delighted to bring him here.
"Tom is a terrific young lad who is a powerful and athletic midfield player who can get forward and score goals."
Adeyemi, who spent last season on loan at League One Brentford, will officially become a Birmingham player on July 1.
The Saints are hoping to pip a number of their Premier League rivals to the 21-year-old's signature, with interest in his services having mounted steadily.
They have, however, seen the highly-rated midfielder snub their first contract proposal.
Wanyama has admitted that he turned down the initial proposal from St Mary's and revealed that he is prepared to listen to offers from other sides now that Celtic have opened the exit door.
"While the bid was okay for Celtic, the terms were not right for myself and my agent," he said in the Southern Daily Echo.
"I am open to what offers are made, but I am relaxed and it's important that Celtic are happy too."
Cardiff City are reportedly ready to jump to the front of the transfer queue as they step up their search for new recruits, while Stoke City and Liverpool continue to watch events unfold.
The Morelia wideman almost joined Wigan in January, only for the deal to fall through, but he is now hopeful of sealing a move to England.
It is understood a host of clubs are ready to meet his buy-out clause of £3.5million, and a number of scouts from English teams watched him play 90 minutes of Ecuador's World Cup qualifying draw with Argentina earlier this month.
Swansea, West Brom, West Ham and Hull City are all understood to be keen on the 23-year-old, who has already spent time in Europe in La Liga.
"Jefferson is ready to move to England," Dan Chapman of Full Contact confirmed to Sky Sports.
"We can confirm a number of clubs are showing an interest, which is not surprising after his performance against Argentina last week."
The 26-year-old departs after just 16 appearances in his single season with the Pilgrims.
"Rene is now free to find himself another club and advance his career away from Home Park," a club statement said.
The Irishman arrived from Watford last summer, but has not featured since the 0-0 draw with Accrington in January.
And with manager John Sheridan having signed former Oxford goalkeeper Luke McCormick to compete with Jake Cole, the keeper is heading to pastures new.
