"Tom has gone back to Manchester United for further assessment. They will then make a decision later in the week.," Shakespear told the official website.
"Tom is a strong lad who has got very good upper body strength. He has really grown in confidence since he has been here and his performances have got better with each game. He was looking a real threat for us.
"He then got his first England U20 call up on the back of that form, which was a great reward for all the hard work he has put in over the season.
"Admittedly it's not looking good, but let's not write him off yet because he is a strong boy."