Complex sentence: He then moved to rivals Rot-Weiß Erfurt for the 2007--08 season, spending two season with the club being a regular, making 56 appearances and scoring 12 goals.
Split into simpler sentences: He then moved to rivals FC Rot-Weiß Erfurt for the 2007--08 season. He spent two season with the club being a regular, making 56 appearances and scoring 12 goals.