Roy Kean was spotted watching his former side Celtic play Scottish rivals Rangers in the Old Firm derby on Saturday.
The former Man United captain joined The Hoops back in January 2006 after his unceremonious departure from the Red Devils.
He would play for the Scottish champions for half a season, before announcing his retirment at the end of the season.
But on Saturday, Keane was seen in the stands at Celtic Park today watching his old side as they took a 1-0 lead against Rangers.
Paulo Bernardo smashed a half-volley past goalkeeper Jack Butland to put the hosts ahead, with Celtic looking to claim their third consecutive victory in the Scottish Premiership.