 In 1989-90 Northampton were relegated and he joined Colchester United in the close season.Colchester had just been relegated to the GM Vauxhall Conference, but Donald helped them win promotion in his second season with the U's, missing just one League game as they edged Wycombe Wanderers to promotion.Donald played in 9 of their first 10 Football League games in 1992–93, but then only played one more league match (on 28 November), before his final senior appearance for the club - an Autoglass Trophy match against his former side Northampton Town on 1 December 1992.