Complex sentence: After struggling to break into the first team, Marques was subsequently released by Marítimo after just one season and in the 2005-06 season Marques moved to Leeds United in England on a Bosman transfer.
Split into simpler sentences: After struggling to break into the first team, Marques was released after just one season. Prior to the the 2005-06 season, Marques moved to Leeds United in England on a Bosman transfer.