Speaking ahead of Paris Saint-Germain's Champions League match with Barcelona, the midfielder said he felt in good shape and would answer England manager Roy Hodgson's call if it came.
He said: "I'm not ready to hang my boots up yet. Somebody just asked whether I would want to play for England again - who wouldn't?
"It's one of the reasons why I've never retired from international football, because if there's ever a chance I could play for my country again I would never turn that down."
Watch Paris Saint-Germain v Barcelona live on ITV from 7.30pm tonight.