Jose Mourinho wants to strengthen his central defence and the Brighton ace, who made his international debut against the USA on Thursday, is on his radar.
Dunk, 27 this week, signed a new contract with the Seagulls until 2023 last month.
However, United are still confident they can tempt him away from the seaside and up to Manchester.
It is no secret that Manchester United are set to break the bank in January as they desperately try to tighten up their defence.
Everton have been long-time admirers of his.
Ironically his impressive debut on the international stage came alongside Michael Keane – also linked with United.
However, Mourinho is tentative towards spending big in the January transfer market.
He has been outspoken about not being a fan of the winter window.
Last January, United spent big on Alexis Sanchez, who turned out to be a flop.
Since joining, Sanchez has played just 21 game, scoring three times.
“He came in the worst moment of the season, which is the winter market,” he said.
“That’s why I don’t like the winter market very much.
“I think this [signing Alexis] was a chance that we didn’t want to lose and we made it.”
United could be forced to spend big for Dunk, as the defender’s recent contract saw him commit for another five years, and there is likely to be a large release clause involved for a player so recently called up by England.
Everton, Southampton and Leicester are also reported to be interested in the defender.
