Henrikh Mkhitaryan is fighting for his future at Manchester United.
The Sun says Jose Mourinho and his United backroom staff are still understood to have major reservations over the 28-year-old.
The Armenian was axed from their weekend 4-1 win at home to Newcastle because of "tactical reasons".
An Old Trafford source said: “There are still problems with Mkhitaryan. He is battling to save his career here.
“There are huge reservations over him from Jose and his backroom team. He has shown an alarming sign of fatigue in recent weeks.
“He could even be handed a rest after the international break after going away with Armenia. It's going to be a busy festive period.
“Henrikh did work hard to get into shape after the concerns last year but they seem to be coming back in a way. It's a huge issue."