Dixon points to Gallas' meltdown at Birmingham City as one example of where the Frenchman's leadership let the team down.
"I know for a fact that morale in the dressing-room went down after the Birmingham game," Dixon told The Times. "Players were looking at the captain and asking 'What is he doing?' He wasn't acting like a leader and hasn't done for much of the season. Real captains cannot let their emotions take over, never ever, as they should always be thinking of their team-mates and leading by example. Gallas doesn't appear capable of doing that."