Euphemia I'd try and get the football "unbanned", regardless of the size of your school. I've had years when I actually took them for football (dinner ladies refused), because it led to a lot fewer issues with behaviour at lunchtimes and a lot less trouble for me to sort out after.
I also don't tend to have children questioning my rules. There are only four rules in my classroom. They are more than capable of following them.
We can send out, though. They will go to a partner class (as written in the school's behaviour policy) and sit there for a few minutes. Any more poor behaviour and they get to do lunchtime detention with SLT (so sometimes that's with me...great). In the past, I've had someone refuse to leave the room. They were collected by the deputy or our headteacher and suitably bollocked, followed by parents being asked for a chat and child being put on SLT report. I refuse to enter into a discussion at that point.
I do take minutes at break or lunchtime off children for poor behaviour, but they tend to be minor things...a little silly behaviour, which has stopped us from getting on with our work, or a silly comment shouted out. If they are unlucky and I happen to be on duty shortly after they've been annoying, they can stand outside on the playground with me and watch their friends play.
On the flipside, I try to make a point of letting parents know when their children have been lovely, worked hard, set a good example and done themselves proud.