Not sure (assuming that you mean Trippier). Personally I'd like to keep him, although it seems that many Spurs fans don't.
For starters I struggle to see who we're going to sign as a clear upgrade. And secondly, I feel he will be better than last season because he's had a chance to rest up this summer, whereas last summer was the World Cup.
There is some talk of perhaps shifting Foyth across to RB, where he's played a few times both for Spurs and Argentina. And maybe Pochettino wants to see how everyone looks - including the other RBs (Aurier and Kyle Walker-Peters) - in the first week or two of pre-season training before deciding what to do.
I don't know of any real targets as backup for Kane.