Actually scrub that, they will DEFINITELY BE IN POT 3 unless they win the CL. So hopefully they get a tough ride next season.
Approximation
Pot 1
Real Madrid CL
FC Barcelona (Spain, 1st)
Bayern München (Germany, 1st)
Paris Saint-Germain (France, 1st)
Manchester City (England, 1st)
FC Porto or Benfica (Portugal, 1st)
Napoli or Juve (Italy, 1st)
Lokomotiv Moscow (Russia, 1st)
(if Bayern win then Real Madrid drop to Pot 2, with Shaktar Donetsk, Ukraine, moving into Pot 1)
Pot 2
Atlético Madrid
Juventus (Napoli would be in a lower pot)
Arsenal Europa IF qualifying
Borussia Dortmund
Manchester United
Shakhtar Donetsk
Benfica or Porto
Zenit St. Petersburg
Pot 3
Tottenham Hotspur
Bayer Leverkusen
AS Roma (currently 3rd)
FC Basel
Liverpool
Might advance 2-3 places depending on other final tables but definitely in pot 3 for now)