Arsenal staff member was in Chelsea half before cup tie‘There are certain etiquettes in football,’ Rosenior saysLiam Rosenior has accused Arsenal of disrespecting Chelsea by disrupting their warm-up before the second leg of their Carabao Cup semi-final.Television cameras caught Chelsea’s head coach losing his cool and aiming a foul-mouthed outburst at an unidentified member of Arsenal staff for straying into the wrong half of the pitch before the sides met at the Emirates Stadium on Tuesday. Rosenior, who was seen telling someone to stay in their half, looked livid at the time and said on Thursday that there were “certain etiquettes in football” to observe, after being asked why the incident angered him so much. Continue reading...