He told the Daily Mirror: "I'm inconsolable and desolate at what's happened.
"My family keep telling me I should forget it as soon as possible, that I should now switch to club matters and the Champions League, but that's easier said than done.
"Nothing has revived me so far.
"When Arsene Wenger asked me what state I was in, I honestly told him that at the moment I just don't want to play football.
"He talked to me for a long time. He said, too, that I need to switch my attention. But I can't do it yet."
Gunners boss Arsene Wenger, whose side host Chelsea in the Premier League on Sunday, admitted the player was not in the right frame of mind to start in last weekend's 1-0 defeat at Sunderland.
"He came back from Slovenia very down and that's the main reason I didn't play him from the start against Sunderland," said the Frenchman.
Arsenal Specials. Click here to bet.