Although he played in United’s unexpected victory over Manchester City in the FA Cup final the previous season, Erik ten Hag, the manager of United, did not have him in his plans for this season.
Aaron Wan-Bissaka, a defender for Manchester United, was acquired by West Ham on Tuesday for an estimated £15 million ($19 million).
After five years at Old Trafford, Wan-Bissaka and the Hammers reached an agreement on a seven-year contract.
After joining United in 2019, the 26-year-old right-back played 190 games for the team after leaving Crystal Palace.
Although he played in United’s unexpected victory over Manchester City in the FA Cup final the previous season, Erik ten Hag, the manager of United, did not have him in his plans for this season.
“It’s an amazing feeling to be back in London and I’m excited for what’s coming,” Wan-Bissaka said.
“I was born here and I know the ins and outs of London, which plays a big part in my life, so to be back playing in this city means a lot to me.”
United are expected to sign Bayern Munich right-back Noussair Mazraoui to replace Wan-Bissaka.
Wan-Bissaka is West Ham’s eighth close-season signing after their swoops for Jean-Clair Todibo, Crysencio Summerville, Luis Guilherme, Niclas Fullkrug, Wes Foderingham, Max Kilman and Guido Rodriguez.
“I can’t wait to get on the pitch, get to know the players and push on from there,” Wan-Bissaka said.
“I see a team that is in it together, that will push each other to win and a group that has got each others’ backs through thick and thin.”
Hammers technical director Tim Steidten said Wan-Bissaka’s Premier League experience would be valuable for the club’s new boss Julen Lopetegui.
He could make his debut for West Ham in their opening Premier League game against Aston Villa on August 17.
“He’s exactly the type of player we’re looking to attract to this club while in the prime years of his career,” Steidten said.
“He’s an incredibly talented defender who we rate very highly and who is superb in one-on-one situations. He’s versatile too, which is clearly another positive.
“He’s played over 170 Premier League games during his career so he knows the division inside-out.”