Hart is attracting interest from Norwich, France and the MLS.
“It's probable, but not definite," said Dyche. “It's likely that one of them will say, 'I want to go elsewhere'. No guarantee and if they are all here for pre-season, then great.
“I want the team and the squad and the club to get stronger and stronger and I want all these hard decisions.
“But it's not just me and they will look at it from the other end and go, 'I appreciate all that, but I want to be playing every week', and they can't all play."