Currently 26 UEFA Elite referees, I cannot see how more than 2 from each country will be selected so that trims 2 Germans and 1 Spaniard. There are a couple for whom it is too early Bastien for one. Plus there may be a couple of the older hands who will retire or shown to be past their best.
I think it will be a minimum of 18 refs appointed so I believe both Taylor and Oliver will get games