Sunderland keeper Mignolet defends O'Neill
Mignolet has given O'Neill his full support.
He said: "He knows what is needed and he is experienced enough to deal with these kind of situations - he knows what he is doing.
"He still instills you with a lot of confidence. That is certainly what he has done with me.
"When I got injured I played my first game after just five training sessions and that gave me a lot of confidence to come back and do my best."