He said: "It will be a massive step for us and a great boost if we can beat Chelsea. There will still be another four games to play before the end of the group stages, but I think it'll be easier for us if we've got six points.
"We had a brilliant result against a very good Real Betis team in the first match and now we're looking to build on that. Already we have a three point lead over Betis and that's important for us because they are tough opposition. Now we're looking for another victory.
"We have a lot of respect for Chelsea but we are not afraid of them and I know we can beat them. They are going very well this season but no side is unbeatable.
"We know all about them and we know it will be a tough game but we're confident. We want to have another good run in the Champions League this season and repeat what we achieved last year. It will be difficult but we're going to take things step by step and game by game and then see how far we can go."