Complex sentence: However, his second stint as the club's general manager during the 1979--80 season was controversial, trading away Lanny McDonald, and engaging in a public dispute with team captain Darryl Sittler.
Split into simpler sentences: However, his second stint as the club's general manager during the 1979--80 season was controversial. He traded Lanny McDonald, and engaged in a public dispute with team captain Darryl Sittler.