Muggins
Player Valuation: £60m
If he's booting someone on the floor he is now no longer defending himself. Indeed he himself is now an assailant.
Send him down ffs.
I disagree Frank, to ensure safety when being attacked, it may be necessary to repeatedly strike an attacker even when down.
The keeper had no weapons, but it's possible that the fan may have, as he's gone a long way already by entering the pitch and flying the first kick, and the Ajax arena is a bit mental (I got hit by a firework there once and the stewards are crap). If the fan was allowed back up it could end in disaster for the keeper.
I wouldn't take that chance. Glad the red card has been rescinded.