Simon picked up an ankle injury playing for Wales against Scotland on Wednesday night and although it is not as bad as first feared - he was taken to hospital on the night - he is still sore from the knock.
Darren played an hour for the reserves on his return to action after injury at Watford on Wednesday night while Fredi is back at the club after representing Mali at the African Nations Cup.
Fredi's return comes with Jermain Defoe having scored twice in two games since joining the club and Robbie Keane on fire with seven goals in his last eight games.
Would that mean a selection problem for acting boss David Pleat? "No, it's never a problem," he said at this afternoon's pre-Leicester press conference. "It gives us more alternatives and more flexibility."
Jamie Redknapp is still not quite ready for the squad as he returns from injury and that leaves Anthony Gardner and Helder Postiga on the treatment table.
Darren Anderton and Fredi Kanoute return to the fold but Simon Davies will undergo a late fitness test before Sunday's clash against Leicester City.