Rugby Union

All this weekend's Champions and Challenge Cup team news.

Team news as Toulouse host Gloucester in Sunday's Champions Cup fixture at Stade Ernest Wallon (15:15 GMT).

Already the recipients of a huge fine and points reduction, English champions Saracens now look set to be relegated. BBC rugby union correspondent Chris Jones explains why.

Kieran Marmion returns from a back injury for Connacht's final Champions Cup pool game against Montpellier.

Team news as Harlequins host Clermont Auvergne in Saturday's Champions Cup fixture at Twickenham Stoop (15:15 GMT).

Team news as Exeter Chiefs host La Rochelle in Saturday's Champions Cup fixture at Sandy Park (17:30 GMT).

Leinster welcome back James Ryan from injury for the trip to Benetton as they aim to make it six wins out of six in the Champions Cup.

Leone Nakarawa starts for Glasgow as the visitors chase a victory away to Sale to have any chance of progress in the Champions Cup.

Team news as Saracens host Racing 92 in Sunday's Champions Cup fixture at Allianz Park (13:00 GMT).

Team news as Lyon host Northampton Saints in Saturday's Champions Cup fixture at Matmut Stadium de Gerland (13:00 GMT).

Team news as Pau host Leicester in Saturday's European Challenge Cup fixture at Stade du Hameau (13:00 GMT).

Edinburgh make nine changes as they seek a win over Agen that would seal a place in the last eight of the Challenge Cup.

Marty Moore is ruled out by injury for Ulster's vital European Champions Cup game against Bath but Will Addison is passed fit.

Team news as Zebre host Bristol in Saturday's European Challenge Cup fixture at Stadio Sergio Lanfranchi (14:00 GMT).

Team news as Wasps host Bordeaux Begles in Saturday's European Challenge Cup Pool 3 fixture at the Ricoh Arena (15:00 GMT).

Team details and match preview as Munster host Ospreys in the European Champions Cup on Saturday.

Team news as London Irish host Scarlets in Saturday's European Challenge Cup fixture at Madejski Stadium (20:00 GMT).

Team news as Cardiff Blues host Calvisano in Saturday's European Challenge Cup fixture.

Saracens' star players would still be able to play for England even if they are relegated from the Premiership to the Championship.

Harlequins prop Will Collier renews his contract with the Premiership club.