Olivier Giroud feels he's now finding his best form for Arsenal.

Giroud earned praise for a superb performance at Reading in the Capital One Cup, and the striker believes he is making big strides forward in every match.

"I try to go step by step, game by game," he said. "I feel better and better and I trust in my quality and that I will be able to succeed with Arsenal.

"Although we have a difficult game [at Old Trafford], I am confident in our quality."