Arsenal vs Celtic in play-offs

On one hand, restructuring the qualifying campaign has opened the group stage doors to Latvian champions Venstpils, Cypriots APOEL Nicosia, Hungarian title holders Debrecen and Moldovans Sheriff Tiraspol.

On the other, it has pitted former European Cup winners Celtic against 2006 finalists Arsenal, with the loser confined to taking part in the Europa Liga, the continent’s second tier competition.