 Manchester City defeated Chelsea for the second time in four days with a 4-0 win in the third round of the FA Cup to pile the pressure on Blues manager Graham Potter. City were three up at half-time thanks to Riyad Mahrezs magnificent free-kick, Julian Alvarezs penalty and Phil Fodens tremendous team goal. Mahrez added ... Man City 4-0 Chelsea: Riyad Mahrez helps set up possible Arsenal... 