 Guidetti was back at Man City for the start of 2012–13, but spent the most of the season struggling to recover from the virus that curtailed his spell at Feyenoord.The severity of the disorder saw Guidetti diagnosed with an infected nerve, which caused him to lose feeling in his right leg.Commenting about Guidetti's condition, assistant manager David Platt explained, "For about two or three months he [Guidetti] couldn't do anything and it takes a long time to get that back."