Jose Mourinho made the decision to give the No. 9 shirt to Zlatan Ibrahimovic and handed Martial the No. 11 shirt. Martial's agent admitted that the Frenchman was "hurt" by the decision.
"I am not going to lie about it, it hurt him when Manchester United took the number nine jersey off him. He was surprised by it and he was disappointed for a few days," Martial's agent Philippe Lamboley told 'RMC'.
"But he is a professional. He knew that he had to fight back.
"Personally, I did not accept the decision, which I thought was disrespectful and misplaced. I let the United hierarchy know how I felt. You do not do things like that. We have turned the page, but not forgotten about it".
However, Lamboley said that there was no problem between Martial and Mourinho.
"It is not true that Anthony has a bad relationship with Mourinho," he added.
"They have a professional relationship. I'm sure Mourinho will get the best out of him, just like Louis van Gaal did before him.
"Anthony is happy at United. We are trying to get out of a bad spell, he is no longer smiling all the time. People who know him know that he likes to smile".