"Beating United in our first big test of the season was very important for our confidence and this is another big test for us," said the midfielder.
"We know Chelsea have a great record at home in the Premier League - they haven't been beaten for four seasons. It is going to be really tough but we honestly feel we are ready to get a good result there.
"We won't be going to Stamford Bridge with any fear. We respect them as a very good side but we are confident in our own ability and we believe we can win.
"They have shown great form in recent weeks and we expect a tough game, but we go into every game expecting to win now and Sunday will be no different.
"Hopefully we can be the team to end their unbeaten home record."