The two played together at Portsmouth before Defoe returned to Spurs.
Defoe told Sky Sports News: “I spoke to ‘Crouchy’ over the summer, while we were on England duty. I’ve played with him for several years, at Under-21 and now senior level.
“It’s down to Crouchy, obviously he’s going to go where he’s going to play.
“If he wants to come here it’s only going to help the team.”