Bukayo Saka and Gabriel Jesus were the two players denied by Alisson in that move. Then Gabriel Martinelli had a shot blocked. But it was all in vain if this penalty is scored.
Thiago catches Gabriel Jesus and that's what the penalty was for. It came moments after Alisson made a double save.
Liverpool are furious, they think that is not a penalty.
Gabriel Martinelli takes far too many touches around the box and eventually passes to Granit Xhaka, whose low ball across the box is blocked by Ibrahima Konate.
Michael Oliver did seem to be influenced into given Gomez that yellow card because of Mikel Arteta's actions on the touchline.