Berbatov told The Sun: "The start to this season has been pretty much like the beginning of last season.
"That didn't go according to plan but look how we ended up. We finished fifth and I am sure we can push on this time around. No one is worried. We have some great players and a real belief about us. Nothing will put us off. Everyone is behind the boss and we are ready to do even better.
"People ask us if everything is back to normal now. But it has been normal all the time. There has never been any problem from inside the camp. We support each other.
"With a derby to play, everyone is ready. Did it surprise me what people were saying about Martin? None of us want to talk about that any more. We are all behind him.
"How many games are gone? Four? That is nothing and there is a long way to go. I am confident it will all work out."