The 29-year-old Spanish defender, who was loaned to Serie A side Monza this summer, underwent surgery at Milan’s Niguarda hospital on Friday for back wounds suffered while shopping with his wife and son the previous evening.

In a statement Serie A club Monza said that Mari “has returned home and will now begin a period of complete rest”.

Mari was one of several people attacked in a Carrefour supermarket in Assago, on the outskirts of Milan in northern Italy, by a man apparently suffering from psychological problems who killed one man after grabbing a knife from a shelf.

Four other people were hurt by the 46-year-old Italian who was arrested by police, after being disarmed by former Napoli and Inter Milan defender Massimo Taranto.

Monza chief executive Adriano Galliani had asked that Monday’s match with Bologna be postponed but the fixture will be played.