Complex sentence: He graduated from the youth ranks in 1999 and in his debut season, aged 19, played 22 matches and scoring four goals for the Serie C2 side before earining a move to Serie C1 club U.S. Avellino the following year in 2000-01.
Split into simpler sentences: He graduated from the youth ranks in 1999 and in his debut season, aged 19, played 22 matches and scoring four goals for the Serie C2 side. He then earned a move to Serie C1 club U.S. Avellino the following year in 2000-01.