Ask anyone who has ever seen Arjen Robben play what he is best at, and they will tell you that he loves to cut-in from the right wing onto his left foot and curl a shot in at the far post.
It's gone past becoming a trademark move, and has moved into meme territory, as not a game goes by that features the Dutchman where he doesn't go back to the old tried and tested at least a few times to see if the opposition have been paying attention.
One man who has certainly not been paying attention is Francis Coquelin, who rather than try to shut down what Robben was clearly trying to do, he actually showed him onto his strong foot and invited him to try and score from what he has essentially made a career out of doing.
And Robben did not need to be asked twice. The goal was a stunner, but as Richie Sadlier perfectly pointed out in the RTÉ studio at half-time, there was absolutely no way that he should have been allowed to get the shot off.
If you've a passing interest in professional football, and you've heard of Robben, you know that this is what he wants to do.
Criminal. Absolutely criminal defending.
Alexis Sanchez would go on to bag a huge away goal for Arsenal on his second attempt following a missed penalty, but how they managed to find themselves 1-0 down by letting Robben do what he did is genuinely baffling.