Pool One

Wasps, who welcome back Juan de Jongh, have a very slim chance of topping the pool. Dai Young’s side would need a bonus-point win over Ulster, denying their rivals any game points, as well as La Rochelle failing to collect any points at home to Harlequins, who are without Mike Brown and Chris Robshaw. A bonus point win for Ulster sees them winners but anything else would allow La Rochelle to go through top with a bonus point win.

Fixtures: Wasps v Ulster, La Rochelle v Quins, Sunday 3.15pm

Pool Two

Saracens, the two-times defending champions, cannot top the pool but a bonus-point win over Northampton and an Ospreys defeat at Clermont would give them 18 points and a chance of going through as one of the three best runners-up. Clermont, for whom Greig Laidlaw is on the bench after a long absence, will top the pool and go through with victory but a win for the Ospreys, denying the French side a losing bonus point in the process, would see the Welsh side advance.

Fixtures: Saracens v Northampton, Clermont v Ospreys, Saturday 3.15pm

Pool Three

Exeter will be hoping a bonus-point win in Glasgow is enough to send them through as runners-up on 19 points but the Warriors recall Stuart Hogg, Tommy Seymour and Alex Dunbar. Leinster are the only team already assured of qualification, having secured 23 points from a possible 25. Victory over Montpellier will send them through as the top seeds but the French side can still squeeze through themselves with a bonus-point victory.

Fixtures: Glasgow v Exeter, Montpellier v Leinster, Saturday 1pm

Pool Four

Munster are in pole position to top the pool and would do so with a bonus-point win at home to Castres. The French side can still finish first as well but would need to win and Racing to lose without a bonus point at Leicester. The Tigers, who recall Matt Toomua and Manu Tuilagi, could do the Premiership sides chasing qualification a considerable favour by beating Racing.

Fixtures: Leicester v Racing, Munster v Castres, Sunday 1pm

Pool Five

Scarlets host Toulon in what is effectively a straight shootout to top the pool – the Welsh side trail the three-times champions by a point. Bath cannot top the pool but a bonus-point victory away to Benetton would give them 18 and second place provided the loser of Scarlets v Toulon fail to collect any bonus points. Freddie Burns gets a rare start for Bath at fly-half while Sam Underhill makes his second appearance since mid-November.

Fixtures: Scarlets v Toulon, Treviso v Bath, Saturday 5.30pm