The international of England left the citizens in January on the Serie A side and strived for a permanent step this summer that never happened.
Walker has attracted the attention of the Premier League side Everton, with manager David Moyes reportedly on the hunt for a new right back, reveals journalist Mike Mcgrath.
His future in the Etihad Stadium has become uncertain after a season of limited playing time. His loan tint in Milan in the second half of the 2024-25 campaign offered a new start, but did not revive his form.