United will play their first competitive fixture since March on Friday when they take on Jose Mourinho's Tottenham side away from home.Ole Gunnar Solskjaer's men remain in the hunt for a top four finish in the Premier League which would see them secure a return to the Champions League.
United could also still win the FA Cup and Europa League this season, with UEFA confirming how their competitions will be completed yesterday.
Mengi was spotted in first-team training earlier this month alongside James Garner and could benefit from a temporary Premier League rule change.
Teams will be allowed to use five substitutes and name nine players on their bench meaning more youngsters could be given a chance to follow in Brandon Williams and Mason.
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