It's difficult to make these kind of assumptions at this point.
5 of these 10 go into the pot:
Zenit St. Petersburg
Ajax
Celtic
Runners-up in Ukraine (probably Kiev)
Runners-up in Portugal (probably Sporting Braga)
Runners-up in Turkey (Fenerbahce or Bursaspor)
Runners-up in Belgium (Bruge I think)
Runners-up in Switzerland (Basel)
Runners-up in Romania (5 clubs competing for this spot)
Playoff winners in Greece (one of Olympiacos, PAOK, AEK, Aris)
Plus these 4 (plus us or Spurs)
4th place in Spain (Mallorca or Sevilla) - Mallorca won't be seeded above us
4th in Serie A (Palermo or Sampdoria) - neither would be seeded above us
3rd in France (Lille or Lyon) - likely to be seeded
3rd in Germany (Bremen or Leverkusen)
So to me it's more dependent on who qualifies from that initial 10.