He says: "We knew we could do better, we haven't changed a lot but the boys are now much more aware of diagonal protection. We are a team who is very offensive-orientated but that does not mean we have to give any space away.
"The boys have done well in different systems, but even against Bournemouth when Jermain Defoe hit the post it was not good defending. So there are always things to work on, the numbers are important, four in the last nine is good, but we have to be prepared for a different challenge against Arsenal.
"Arsenal can create chances and they have a strong side and a lot of good, good footballers on the pitch. We have to defend them in the best way we can. If there are any gaps we have to use them. I don't know if there will be a lot of goals, but we go there to perform."