So barring a complete turn around by Sarries.
Pool A: Bordeaux and Lyon will qualify and Bulls likely. Connacht would need a BP win and hope Sarries don't get anything. Based on this I don't see Sarries beating Lyon, so likest is Bristol beating Connacht to take 4th spot.
Pool B: Toulouse, Baths and Quins already qualified. Ulster need a win to secure 4th. Racing and Cardiff could upset Ulster if they lose.
Pool C: Northampton and Exeter qualified already. Munster should be through too unless Bayonne get a BP win and huge PD. Glasgow vs Toulon could well decide 4th spot.
Pool D: Group of Death. Leinster already qualified as have Leicester and Stormers as neither Sale and La Rochelle can both over take them. Guess it depends on if Sale can overturn La Rochelle, but very unlikely.
Edit: Actually if Sale beat La Rochelle with a BP and La Rochelle get 2 BPs it is possible still for them both to overtake Stormers and Leicester if those two lose heavily with no BPs. Very, very unlikely though.