Yes I think you're right not arrested but denied entry if identified and if found to be in the ground ejected. It's obviously a potentially provocative thing to do to travel to support a Club that you don't support but who you want to beat a rival team. But if the boot was on the other foot and County fans wanted to support another team and travel to watch a game would it be fair to stop them getting in and eject them? Should people have the freedom to do this if they have a genuine interest in the game and don't cause trouble or is it correct to deny them entry or kick them out? It's a difficult one I think.