Irish midfielder Steve McPhail may miss Saturday's clash with Crystal Palace after undergoing minor surgery.
In-form McPhail underwent minor surgery last week to remove a lump on his neck and will need time for stitches to heal.
It should mean a return for contract rebel Joe Ledley - if he recovers from his hip injury.
Meanwhile, striker Ross McCormack is in contention for the Palace game according to boss Dave Jones.
"Ross is fit and raring to go, Now it's a matter of building up his power and match-fitness," said Davey Jones.
McCormack will play in a friendly this week against Bristol Rovers as will fellow Scot Kevin McNaughton, who has not played this season due to ligament damage.
"Kevin is a fit lad - he doesn't carry a lot of weight," added Jones.
"The Rovers match will give Kevin and Ross another game for match practice. Then they will train with us later in the week."
Fingers crossed they both come through fit and well against Bristol. Having them both back will be two new signings.
