Walker's dip in form has also come while issues in his wider private life have been played out in the public domain as he battles to save his marriage to Annie Kilner .
Shortly after City took the lead through Josko Gvardiol, Walker brought down Rasmus Hojlund as he looked to put his side on the counter, with the two squaring up head-to-head.
United ultimately walked away with bragging rights over their fierce rivals on Sunday, as Amad Diallo inspired the visitors to a dramatic comeback in the closing stages of the derby clash.
Rosalind Walker, from Godfrey, Illinois , was left trapped between the bed and wall of her bedroom on March 1 2023 after it 'lowered itself without warning'.