Lukas has history of shafting Schalke

strong team in Schalke twice yet, so we have to keep focused.

“But if we play to our potential, we’re confident we can challenge for the trophy this year.”

Aaron Ramsey vowed to make up for the disappointing defeat by Norwich.

“We weren’t good enough and we want to turn things around,” said the Wales midfielder.

“When you have an upset like that you want to get back out there and put it right.”

Deal

Centre-back Laurent Koscielny has been passed fit but Alex Oxlade-Chamberlain and Theo Walcott are out.

Walcott is coming to the end of his contract and so far no deal has been struck.

Juventus, Liverpool and Manchester City are keen to recruit the speedster.

But Gunners boss Arsene Wenger insisted: “My determination has always been the same – to extend his contract.”

Wojciech Szczesny, Kieran Gibbs, Abou Diaby, Jack Wilshere, Tomas Rosicky and Bacary Sagna are also sidelined.