Yeah I was confused about that too...
Johan Cruyff Arena currently has a capacity of 55,865 and away fans are permitted 5% of that, at minimum, so wouldn't that mean we've got an allocation of around 2,800?
I think that Ajax supporters will feel disappointed about their third place finish last season after such domination of the Eredivisie, however as you say it is a time for rebuilding and hopefully reaching those high levels again.
I would like to ask whether the match at the Johan Cruyff Arena...