The Tottenham midfielder last week returned to the club where he started his career on a one-month loan deal.
"He's not played a game for Tottenham (this season)," he said. "I imagine playing in the Prem division would be easier than playing in the Championship. (There's) more quality but this is a difficult league to play in if you're not match fit.
"He's got to be match fit, though, that's the balancing act.
"Do you play him and he's not match fit and he gets injured again because he's not quite ready for the hurly burly of the Championship? So it's a balancing act I'm afraid."