The striker is understood to have agreed personal terms with the Serie A club ahead of a move reportedly worth £4 million, which will be paid in three installments.
400万英镑,分三次付款。
The Bulgarian will undergo a medical before signing a two-year contract with an option for a further year to end a summer of speculation over his future.
体检之后,贝巴会签署一个两年合同,包括一个第三年附加条款。
Berbatov was desperate to leave United after falling out of favour at Old Trafford and finding himself down the pecking order behind Robin van Persie, Wayne Rooney, Danny Welbeck and Javier Hernandez.
The 31-year-old, who was top scorer in the Premier League two seasons ago, cost United a club record £30.75m when he joined from Tottenham in 2008 but leaves for a fraction of that fee with just a year remaining on his contract.
West Ham, Zenit St Petersburg and Dynamo Kiev were among the clubs to express an interest in the former Bayer Leverkusen man, who made just 12 Premier League appearances last season, scoring seven goals.