Cheers!!! Very much appreciate the explanation!He can't sign for them and then go somewhere else until the summer. You can only register for 2 clubs in the season.
Also, he would have to want to sign for City I believe. I doubt he can be sold or forced to go there, its just a case that they could step-in and sign him for their agreed price IF he wanted it.
Lastly, they would, if both the above didn't apply, need to know they had a buyer lined up to make it worth it.