Weekend's European team news previews

Saturday

Champions Cup

Munster v Saracens

Ulster v Harlequins

Northampton v Leinster

Ospreys v Racing

La Rochelle v Glasgow Warriors

Challenge Cup

Cardiff Blues v Pau

Bayonne v Scarlets

Bristol v Stade Francais

Toulon v London Irish

Leicester v Calvisano

Worcester v Dragons

Sunday

Champions Cup

Gloucester v Connacht

Sale v Exeter

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