Back to the Carson incident, having watched it several times it was definitely just outside the box when he picked it up (millimetres!). However, there was no way the ref could have spotted that as he was too far away, the decision must have come from the linesman. If he did it was a good spot, as even after countless pauses on the video it’s not easy to see. What baffles me is why didn’t Carson not attempt to play it with his foot rather than risk picking it up?