Riyad Mahrez is away at AFCON so Manchester City will be missing their top scorer in all competitions for the welcome of Chelsea. Kyle Walker returned to first-team action at the weekend after exactly a month out, but the likes of Phil Foden, John Stones and Oleksandr Zinchenko remain doubts. Jack Grealish has not got off the bench in the last couple when City have played their rivals so it will be interesting to see whether that continues here. Thiago Silva and N'Golo Kante both returned from COVID-19 in Chelsea's 1-0 win away to Tottenham on Wednesday night but now Andreas Christensen has tested positive. Defensive trio Ben Chilwell, Reece James and Trevoh Chalobah were already sidelined for Thomas Tuchel's side. Timo Werner, Kai Havertz and Hakim Ziyech are in competition to start in attack alongside Mason Mount and Romelu Lukaku. Jorginho and Mateo Kovacic may get the nod in midfield over Kante, who looked a little rusty off the bench against Tottenham in midweek.