The Italian international has been linked with both Manchester clubs, who may now be tempted to firm up their interest following the news he has rejected a new contract at Torino.
The 26-year-old has netted 11 times as a wide player in a 4-3-3 system this season, and has caught the attention of several European heavyweights with his performances.
Torino’s cross-city rivals Juventus have been heavily linked with a summer move for the attacker, who is expected to feature against Roy Hodgson’s England side at the summer’s World Cup.
The Manchester giants could enter a bidding war with Juventus, following the news Cerci has declined the offer of a new deal.
Both clubs have sent scouts to watch him in action this season, and have been left suitably impressed with what they have seen.
Cerci has just a year remaining on his current contract, meaning Torino may well cash in at the end of the season to prevent losing him on a free transfer a year later.