But he hopes to play a part tonight at the Emirates Stadium, despite having the record of freezing on the big occasion.
The French winger scored a goal against Sunderland reserves on Thursday as Alan Pardew watched from the stands.
But I wouldn't have thought a goal in reserve team football constitutes a starting place at Arsenal.
He has a lot to prove to the supporters, who have not taken to his limp displays in hard-fought fixtures.
A lot was made of Alan Pardew's "French Connection" when they all signed ... but Obertan and Sylvain Marveaux don't seem up to scratch for the tough-tackling Premiership.
But he can argue "I can only show what I can do if I am in the team".
Is he worst the risk? Because he seriously IS a risk.
Obertan: “We are still pushing for the top four. Obviously it's going to be really hard for us.
“Arsenal had a good result against Milan in midweek even though they got knocked out of the Champions League, so we expect to face a team playing with confidence.
“We will go there hoping to get one point, but hopefully we can do even better and get all three.”
"I played in a more advanced central role on Thursday, and hopefully I did enough to be involved at Arsenal whether I get start or come off the bench, it would be nice to play a part.”