The 34-year-old Walker will join Milan for the remainder of the season in a deal that could become permanent in the summer.

Walker endured a difficult campaign at City and had not started a game since their derby loss to Manchester United on December 15.

He ends his long association with City, whom he joined from Tottenham in 2017, after winning six Premier League titles and the 2023 Champions League under Pep Guardiola.

"Manchester City... where do I start? Signing for this incredible club in 2017 was a dream come true," Walker wrote on social media.

"Seven years later, winning 17 trophies, including the Champions League and the famous treble is something I could only have dreamt as a child."

Milan are a distant eighth in Serie A but are on course for automatic qualification for the Champions League last 16 after five straight wins in Europe.

He will be reunited with other England internationals Fikayo Tomori, Tammy Abraham and Ruben Loftus-Cheek at the San Siro.