Caldwell reassures Wigan fans
Mathieu Debuchy will sit out the first leg of Newcastle's Europa League last-32 encounter with Bordeaux as he has already turned out for Lille in continental competition this season.
Yoan Gourcuff is also ineligible having already represented Bordeaux, but he picked up an injury against Tottenham on Saturday and would have sat the tie out regardless.
Hatem Ben Arfa (knee) continues to work his way back to full fitness, but fellow midfielder Sammy Ameobi is out with a hamstring problem.
Metalist are in the middle of a winter break in the Ukrainian League and have no real injury concerns to contend with.
They were held to a 1-1 draw by Whitley Bay in a friendly on Sunday night and will hope that encounter has blown away any cobwebs.
It is possible that Metalist will have up to 10 South Americans in their starting XI at St James' Park, with Brazilian forward Cleiton Xavier their top marksman.
Latics are currently second bottom having not won a league game since December 29 and Roberto Martinez decided to take his side for some training abroad having reaped the benefits in previous seasons.
Some fans were angered by the photos and Caldwell since has admitted that it was a bad move for the pictures to be posted online, saying that the players are fully focused on keeping Wigan up.
"Obviously, you need your downtime but we realise that one or two pictures of players lying by the pool that appeared on Twitter may have come across as disrespectful to our supporters and so we have decided ourselves as a group to take them down to avoid confusion.
"I can assure each and every one of our fans that the players are totally committed and focused on the fight to keep our club in the Barclay's Premier League.
"The fans have been different class all season, as they have been since I came to Wigan. We are all fighting together, fans and players, for the good of our club and I'm sure we will continue sticking together in the crucial weeks and months ahead."