Unfortunately Pochettino has allegedly stated that he wishes Colwill to be in his squad next season.
I'm sure certain assurances would have been given to Pochettino when he signed his Chelsea contract.
I would guess Colwill would only be sold with the new manager's blessing.
Once Chelsea sell...
How does a transfer request affect the players rights. Doe's he lose out financially by doing that?
I would imagine if Levi wishes to leave he informs Chelsea that he has no intention of signing a new extended contract. This would then reduce his value substantially in 12 months time (but...