Complex sentence: He was released at the end of the following season and joined Doncaster Rovers in August 1990, moving on to Grimsby Town on a free transfer in July 1993 after 77 games for Doncaster.
Split into simpler sentences: He was released at the end of the following season and joined Doncaster Rovers in August 1990. He moved to Grimsby Town on a free transfer in July 1993 after 77 games for Doncaster.