In a statement issued immediately after the match, MiltonKeynesDons Football Club said there was "no evidence to suggest the alleged gesture was of a racist nature".
Wimbledon were granted permission to relocate to MiltonKeynes in 2002 - and were ultimately rebranded MiltonKeynesDons - resulting in Wimbledon's fans forming a new club, AFC Wimbledon.
He learnt his trade at Macclesfield before leading MiltonKeynesDons to a Football League Trophy final victory in March 2008 and to the League Two title a month later.