Erik ten Hag’s side bounced back from a demoralising Europa League exit to Sevilla to book a spot in the FA Cup final to play rivals Manchester City.
The win came via a penalty shootout as the two teams played out a 0-0 draw over 120 minutes.
In what was an even game, United had Wan-Bissaka to thank for keeping Kaoru Mitoma quiet throughout.
The Japanese playmaker has been in sensational form for the Seagulls this season but he was nullified by Wan-Bissaka at Wembley.
The defender takes regular criticism for his lack of attacking output but there’s no doubting his ability in defending.
And Maddison, who was a boyhood United fan, says Wan-Bissaka is the best one-on-one defender in the world.
‘AWB is ridiculously good a 1 vs 1 defending,’ said Maddison.
‘Probably the best in the world bar none.
‘So many wingers run out of ideas when playing directly against him.’
Despite his revival at Old Trafford, United will consider selling Wan-Bissaka this summer.
Ten Hag is interested in signing Jeremie Frimpong from Bayer Leverkusen.
MORE : Romelu Lukaku targets Inter stay after Chelsea loan ends
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