Manchester United and Nice are facing a UEFA ban next season over Sir Jim Ratcliffe’s co-ownership.
The Sun says United and Nice face being blocked if they both qualify for the same competition.
The two clubs are on track to qualify for the Europa League this season.
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A UEFA source said: “It is correct that Manchester United and Nice cannot play in the same competition.
“They could play in different competitions, as there is no ‘feeding’ between competitions any more.”
