Di Canio has taken a swipe at â€œbig egosâ€™â€™ like Carlos Tevez and the Ââ€œhot-headsâ€™â€™ who he feels Mancini found hard to handle.
The Sunderland boss said: â€œItâ€™s not easy when you have big egos like Tevez.
â€œItâ€™s difficult when you have hot-headed players. Mancini found a simple difficulty. He had seven hot-heads.
â€œOne or two you can handle but not five, six, or seven. Last season there wasnâ€™t speculation about the situation there, only Tevez.
â€œBut it wasnâ€™t easy this year because Mancini didnâ€™t continue what he did with his team. Also, the players are piranhas. They can smell if you are weak. They were far away from Man United in the league and they went out of the ÂChampions League early.
â€œMancini started something political with the board. The players know â€“ they saw a fault. Itâ€™s tough to find devotion for the manager in the modern Âgeneration.
â€œI donâ€™t want devotion. I want players to follow me and we will smile together one day.â€™â€™