 Incidentally, in the return fixture on 24 February 2008 in Udine, Borriello hit another hat-trick in a 5–3 away win, reaching 15 league goals in the process.He finished the season with 19, making him the third-highest goalscorer in the league behind Juventus pair Alessandro Del Piero and David Trezeguet.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.