A lynchpin in the Dons defence ever since his arrival in the summer of 2006, Sean was sorely missed by the Dons during the 2009/10 season as he recovered from knee surgery the previous summer. Expected to return to full fitness for the 2010/11 season, his comeback will be like a new signing for Dons supporters.

A former England Under-20 international, Sean began his career with Everton before joining Swindon in March 2004. After two excellent seasons with the Robins, where he was made club captain, Martin Allen made the powerful defender a priority signing at the heart of his Dons defence.

Sean made 138 appearances in his first three years in MK, weighing in with a respectable 13 goals, including the second in the 2008 Johnstone's Paint Trophy win at Wembley. Sean has also captained the side on a number of occasions.

Following his recent injury, Sean returned to competitive action in February and made six promising appearances towards the end of the season before the decision was taken to start his pre-season preparations early for the forthcoming campaign.

His positional awareness, aerial dominance and downright bravery make him a horrible opponent for opposition strikers to come up against.