In 2009–10 season, he was the starting central midfielder in 352 formation, or 433 formation. partnered mainly with Daniele Galloppa, Blerim Džemaili (until February), Francesco Valiani (since February as left midfielder) and Luis Jiménez (since February as attacking midfielder). He only played as substitute in round 5, suspended in round 19 and round 29. Since April, Morrone was rested due to injury. He was also the team captain. On 5 May, he was returned from training and played the match against Juventus on 9 May, which he was recovered in-time to replace Džemaili who suspended.