it may become a problem. question is where does he want to play? if its CM, and thats where he plays for england, then playing second fiddle to wanyama isnt going to go down well over time. will he be happy slotting in around others? only dier knows.
Personally feel there are enough games for everyone to get a decent run. Also I would rather a player ran like a mentalist for 70mins making way for a fresh replacement later on