Pogba has so far refused a new deal — meaning United would cash in for the right fee.
Paris Saint-Germain lead the chase but would only fork out around half of the £89m United paid for him five years ago.
A source said: “Rashford and several others have been doing everything to convince Pogba to stay.
"They believe the team would lose a key man if he goes as he's seen as a genuine world-class talent among the squad.
“He's also a leader in the dressing room — one of the players the younger ones look up to when the team is struggling."
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