Bullock is out of contract at the end of the season but as he is under 24 York City could still command a fee. That would be set be a tribunal.
Bullock has said
"I could wait until the end of the season but, if its right for everyone, why not do it now?" I've never been in this situation before and it's difficult for me but it's a nice position to be in."
Bullock scored York City's consolation goal as the Minstermen lost 2 - 1 at Northampton last Saturday.