Berbatov told The Sun: "The start to this season has been pretty much like the beginning of last season.
"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."