Pepe LeFrits
I am probably being unfair. It's most likely just a very unfortuante case of there being significant enough damage to result in a rupture as soon as he put strain on the knee in the second half, but not enough damage to prevent him passing the doctor's test.
I just had a look and the physio went through the tests on the knee on the pitch too, and Arteta was calling for a sub at that time.
it's just one of those things I guess.
I absolutely fucking hate ACL injuries in football. I live in fear of them for our boys always.