Mannone made a number of key saves in Saturday's 2-2 draw with Southampton and he feels his side showed exactly the resilience they will need over the rest of the season as they battled back strongly from a 2-0 deficit.
He added: "We have changed our whole mentality. Even when we are down, at least we compete.
"It's a great point. The way it started wasn't the best for us. The first half, each one of us didn't play at the standard, and against a good team like Southampton, you go down 2-0.
"At least then we came up again in full gear and we came back into the game and could even have won it, to be honest.
"We put pressure on them, as they did on us in the first half, and as you could see, a good team like Southampton was struggling with our pressure."
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