 Forfar went on to finish in the promotion play off positions in three of the four seasons in League One, missing out on the league championship on the last day to Greenock Morton in the 2014–15 campaign.Following an overhaul of the Forfar squad and a poor run of form midway through the 2015–16 campaign Campbell was sacked on Saturday 12 December 2015, after seven years in charge.After leaving Forfar, Campbell made it clear that it was his intention to return to football management at the earliest opportunity.