The England international has joined the club from Borussia Dortmund until June 2026, with the option of a further year.
He said: “The chance to join Manchester United is a dream come true and I just cannot wait to perform in the Premier League.”
“This is a young and exciting squad and I know, together, we can develop into something special to bring the success the fans deserve.”
As expected, United’s announcement sent a big wave of shock across social media, as his new team-mates and even some other legendary players have been reacting to this news.
Welcome @Sanchooo10 🔴
— Bruno Fernandes (@B_Fernandes8) July 23, 2021
— Marcus Rashford MBE (@MarcusRashford) July 23, 2021
— Mike Phelan (@Mike_Phelan_1) July 23, 2021
— Rio Ferdinand (@rioferdy5) July 23, 2021