An old article pointed out by Lusankya. Will post the most important part just in case it disappears from The Independent.
Gianni Infantino, UEFA's general secretary, admitted the final tournament was "not ideal" and that some teams who finish in third place in the four-team groups will go through to the round of 16 knock-out stage.
Organisers also want to avoid teams being able to collude in a match so that both qualify at the expense of another team in the group.
Infantino said UEFA would also review the Euro 2016 qualification competition to ensure that it was not "boring".