Complex sentence: Bucci, who was an indiscuss player during the first golden years of Parma, was however then overtook by a 17-years-old keeper, Gianluigi Buffon, and then decided to leave the team in order to play more regularly.
Split into simpler sentences: Bucci, who was an indiscuss player during the first golden years of Parma, was however then overtaken by a 17-years-old keeper, Gianluigi Buffon. He then decided to leave the team in order to play more regularly.