Ди Дженнаро
Following the sale of striker Alberto Gilardino to Fiorentina, it was confirmed on 29 May 2008 that Borriello would return to Milan as his replacement. The deal included the move of Davide Di Gennaro to Genoa under a co-ownership deal for €2.5 million, in addition to a €7.5 million fee. (However, Di Gennaro was devalued to €1.25 million when he returned to Milan a year later, which made the return of Borriello had cost Milan €8.75 million).