Sounds like it's all but a done deal. I don't agree that he's fast, not one of his best attributes anyway.
Positionally, I think he's terrific. He is extremely mature in defense for a player of his age & experience - plays like someone much older in terms of decisionmaking. He'll need to adapt, especially with the sort of defensive line the team plays as he will need to play the ball out of the back more than he has in the past. Left footed and an excellent defender with maturity - success at CB, finally!