 Complete the following phrase:  In the summer of 1990, Carboni joined A.S. Roma, being an undisputed starter during his seven-year spell, with the exception of the 199293 campaign due to a serious injury. Under manager Ottavio Bianchi, he won the Italian Cup in 1991 in a 42 aggregate victory over former club Sampdoria; he also appeared in the first leg of the 