Arrigo Sacchi warns Atalanta: Valencia have a history of comebacks Valencia It's not over yet

Italian football legend Arrigo Sacchi has warned Atalanta that Valencia are more than capable of pulling off a shock comeback at Mestalla.

With their 4-1 victory against the Spanish side in the first leg of their Champions League last-16 tie, many would assume that Atalanta already have one foot in the next round.

But Sacchi is not completely convinced. For him, it's vital that Atalanta take nothing for granted and are on their guard for the return fixture in Valencia.

"Be careful, because Valencia have a history of comebacks," Sacchi told La Gazzetta dello Sport.

"Valencia will still have belief, given the opportunities they had at San Siro.

"It will be important not to let them take the initiative and gain confidence."