400 Kazan
564 Sion
1158 Augsburg
1695 Basel
2005 Bordeaux
2062 Villarreal
2150 Ludogorets
3117 Man U
3416 Dortmund
3669 Real Madrid
4019 Beşiktaş
Hoffenheim was sold on the above basis for 2286 tickets. With a similar allocation for Sevilla, I would expect it to be the same. 7 guaranteed, then 6 and downwards until sold out. Think this will be the most popular one.
However, Moscow and Maribor will be played by then. So they may ditch 14/15. But given the small numbers who will travel to Moscow and small allocation at Maribor, they won't change anything.