Manager Jose Mourinho has confirmed that Pogba's injury will be long-term, ruling out a return for the 24-year-old anytime soon.
Pogba suffered the injury in United's 3-0 Champions League win over Basel this month and has missed the past four games.
Mourinho discussed injuries and re-classified the setback to Paul Pogba as "long term", and in the same category as Zlatan Ibrahimovic and Marcos Rojo.
Mouinho said he "does not speak about long-term injuries" but was more hopeful on the fitness of defenders Phil Jones and Antonio Valencia.
Such is the concern over Pogba's injury that Finnish muscle fix specialist Sakari Orava has been contacted for advice over whether the in-form midfielder requires surgery or not.
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'Tomorrow some will be out, ' added Mourinho.
"With them, I have the hope to see them training and to have a positive answer [on their availability]".
Mourinho kept a number of players back when United travelled to CSKA Moscow in the Champions League in midweek. When asked whether the Ecuador captain would be fit, Mourinho said: "We have to train but, maybe, yes". The opposition is not the problem.
"[Pogba's] injured, he can not play tomorrow", Mourinho confirmed.
There has been reports during the summer that Young might be allowed to leave Old Trafford, but Mourinho claims the prospect of selling the former England global never entered his mind.
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