pre-season US tour, it's obvious he is unhappy the club has not yet delivered the players he feels he needs to challenge neighbours Manchester City for the title", Fowler wrote in the Mirror.
As United prepare to return to Europe ahead of their Premier League opener against Leicester City on August 10, manager Mourinho refused to give any assurances that Martial will return.
"Matic arrived from the World Cup, holiday, direct to surgery because something happened in the World Cup", Mourinho revealed.
"In every pre-season, it happens the same, with every club, which is that the manager wants more".
Martial has been strongly linked with a move away from United after his agent claimed the 22-year-old Frenchman wanted to leave for more opportunities.
José Mourinho wasreportedly angry about his apparently lack of commitment to pre-season and it was reported this morning that Manchester United are fining the player £180,000 for his supposed truancy. "I know the one who are ready for anything, and I know the ones who are not ready".
"The players we have bought one is a goalkeeper cover, one is a 19-year-old kid, so in fact we have one new player which is Fred, so of course our team is not going to be very different".
"I agree that when the Premier League starts, the transfer window close", Mourinho said.
United is without a number of players after they were given extended breaks following the 2018 World Cup in Russian Federation.
"My players, unbelievable in their effort".