Manchester United great Roy Keane already hinted at a return to management when taking aim at former foe Patrick Vieira last summer.
Forging one of the most iconic rivalries in Premier League history, those two served up countless on-field battles in their playing careers - and one or two feisty ones in the tunnel.
But more than a decade on from leaving his position as Sunderland manager, Keane may take a little step closer to his first meeting with Vieira in the dugout.
