Catalonia's El Nacional reports United have touched base with the representatives of Dembele in recent days.
United have already started to have conversations with his representatives ahead of signing him next year.
Although United are well stocked out wide, it is claimed that the club's interest in Dembele is 'firm'.
The France attacker's contract expires in June and he was in talks with United before being forced out of Euro 2020 with injury.
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