"When Wayne gets interrupted he needs three games to get back," added the boss. "That's why he'll definitely play tomorrow.
"Wayne needs to play a lot of games to get his match-fitness up. He's a strongly-built lad and when he misses two games, it takes him three games to come back. It's the way he's always been.
"He'll play tomorrow night and hopefully that brings him on further. On Saturday [at Reading], that was his best performance of the season so far.
"Shinji Kagawa's injury has been longer than we thought. He's much better now and I don't think he's far away now."
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