Arsenal were clinging to thin hopes after leveling the score in their match against Barcelona at 1-1, bringing the aggregate score of their Champions League tie to a potentially-manageable 3-1. Luis Suarez had other ideas for how things would go from there.
Arsenal gave Suarez way too much to work with for no logical reason, and he made them pay with a sideways volley into the far corner just because he could. That is nasty and a heck of a way to effectively end the tie, putting the score out of reach at 4-1.
I bet Arsene Wenger wishes he had raised that transfer offer by more than one pound now.