As the Red Devils look to add to their forward options, Vale chief Hancock confessed they could not stand in the player's way if a bid does arrive.
He told The Valiant: "We have had no official approaches or offers. We are not nave enough to think that someone who is playing ahead of Premier League forwards for England under-17s and then getting regular games and scoring in League One, won't have eyes on him.
We know that will be happening. All I can say is his family are outstanding. He has been here since day dot (under-nines level) and has a real affinity to Port Vale.
We are excited about his progress here. He's a Port Vale player and I know from the first-team manager right the way through the club, he is seen as a good person and also a great asset for Port Vale.
We will see what the future may hold."