Arsenal midfielder Andrey Arshavin believes he'll be out for three weeks after being injured last night.

Arshavin lasted just a half-hour in their 2-2 draw with Barcelona.

"Perhaps I won't be able to play for another two or three weeks," said Arshavin on his personal website. "It is not a relapse of my old injury, this is a new one."

Arshavin still believes his side are more than capable of giving a good account of themselves in Spain despite having so many influential players out.

"The rest of the players will play to win," he said. "They showed great character on Wednesday. Barcelona had a good start but we found our way back.

"There is one more match ahead, and there is still hope."