He hopes Schalke can strengthen their position at the top of the pool against Arsene Wenger's out-of-sorts side.
"They have not been great but they are a great team, they know how to play," he said.
"They have a good young team, a quality team and we are prepared.
"We have got to be focused, we have to focus on our game for 90 minutes plus added time.
"We should show them we are at home. We have 55,000 people behind us and it should be a great game."