 He was confirmed to the Rosanero first team squad also for the 2007–08 campaign, and finally made his Serie A debut on 30 March 2008 at Stadio San Paolo, against Napoli.In July 2008 Cossentino accepted a loan to Serie B side Triestina in order to gain more first team experience.However, he did not manage to play a single match for the "alabardati", and returned to Palermo in January 2009.