Arsenal wing ace Theo Walcott says every Gunner knows tonight is the biggest game of their careers.

Ahead of their clash with Manchester United, Walcott told arsenal.com: "Man United is the biggest game of our careers.

"It's massive and I think we can do it as well. We have a lot of experience in the Champions League and hopefully, we can create some chances.

"We have to believe that we can get the result. Hopefully the performance against Portsmouth will spur us on as well. A lot of players didn't travel there on Saturday and that will help us.

"Everyone is buzzing, we cannot wait and we're on our own pitch, in front of our own fans. That will be crucial and hopefully, we can do it for them because they have been excellent for us this season"