Complex sentence: Roberts then spent a season at the New Den with Millwall before a finger injury forced him to move into the Semi-professional game where he joined St Albans City and when their manager Garry Hill left to join Dagenham Roberts followed.
Split into simpler sentences: Roberts then spent a season at the New Den with Millwall before a finger injury forced him to move into the Semi-professional game where he joined St Albans City. When their manager Garry Hill left to join Dagenham Roberts followed.