The playmaker met up with the Germany squad last week for their Euro 2016 double-header with Poland and Ireland but was forced to withdraw after a scan found a ‘partial rupture of the other band of the left knee joint’.
He’s expected to be missing for as many as two months in what is a big blow for the Gunners.
But Wenger has refused claims that he forced the player to continue playing in Arsenal’s defeat to Chelsea last month despite picking up the injury.
He (Ozil) told me that once it was discovered on the scan. He did not tell me anything during the game, I did not even know.
“What happened was that at half-time, just before we went out, the physio told me ’Ozil has a little pain with his knee, but it is not bad’.
“He wanted to go on and I told him ’if you don’t feel well, tell me and I will take you off straight away’. He never did that during the whole game, and after I left him on because we were in a position where we needed to score a goal and he can deliver the final ball.
“Then after the game, he went to Germany. With Germany, they thought at the start it was nothing.
“We played on Sunday, on Monday he was off, and on Tuesday they gave him the day off. He was supposed to practice on Wednesday.
“On Wednesday morning, he said he could still not practice.
“They sent him for a scan, and in this scan they discovered that he a knee ligament injury which is quite serious.”