United made an attempt to sign Baleba over the summer, but Brighton successfully priced the midfielder out of the move.
Baleba started from the bench in Saturday's defeat to Bournemouth as Hurzeler admitted his form has been affected by the transfer talk.
"I think it’s normal for a young player when the media creates the noise around him," the Brighton boss said.
"It’s not easy for this player to handle it. Therefore we need to give him the time and support so he comes back to his best performance.
"But he’s a young player and I think that’s something we have to accept, that young players don’t always have the face we want to see. ‘It’s our responsibility to help them in the right moments.
"I think everyone gets affected, especially when you are that young and you hear these kinds of things, no matter if they are wrong or right. But it’s just noise we don’t need."