Dunno yet, but given how our football is run, I expect our allocation to be distributed between preening politicians and their extended families.
Register with UEFA and try your luck in their ballots. You can specify which games you'd like to see.
Only a small percentage of tickets (less than 25% combined) are actually given to the governing bodies of the 2 teams competing, so there will be loads of tickets still available.
I've successfully used this method for quite a few Czech and England games at tournaments before.