Arsenal skipper Robin van Persie says beating Chelsea today is a must.

Van Persie wrote in The Sun: "We have worked hard to get back into the Champions League qualifying places - and we must stay there.

"That is why we have to get three points against Chelsea today. I am sure it's not going to be an easy game for us. Chelsea are also going to give it their all.

"They also want to qualify for the Champions League as well as make up for their 5-3 loss against us at Stamford Bridge.

"And they will do this with confidence after their win over Barcelona. I have watched the game and saw how well they defended their lead. That is the danger of Chelsea, their counter-attack.

"We have to be at our best and forget the loss over Wigan. It was a tough game last Monday."