Complex sentence: In 1990 he played as a youthplayer in Leverkusen before moving on to Benfica where he played from 1990 to 1994,he also played for Arsenal, Fiorentina, Valencia and Sunderland.
Split into simpler sentences: In 1990 he played as a youthplayer in Leverkusen before moving on to Benfica where he played from 1990 to 1994. He also played for Arsenal, Fiorentina, Valencia and Sunderland.