Sir Alex Ferguson has now raised the possibility of a reserve team outing against Swansea at Altrincham on Thursday and the 23-year-old believes he would be ready if the call came.
"My head is good," said Hernandez. "I feel better now.
"I have been training with the team for three or four days but I don't know when I will be back in the squad I always say they are the decisions for the manager. Only he can answer that.
"I just need to be fit and working."