No one's disputing that there'll be a queue of clubs to take him on a free transfer mate.
He'll go for around £30m. It's when, not if.
If he doesn't go this window, it'll be because he signs a new contract here. Clubs who want him won't take the risk on that happening - they'll have indications he wants out now, and it's a matter of if, not when, and trying to get the price down for a player who won't instantly command a place in a starting eleven for them for a few months regardless of when he joins.
So no, I won't be saying "it's because they want him on a free" - because it's not plausible.