Wasps sign All Blacks centre Malakai Fekitoa from French Top 14 side Toulon for next season.
Bristol will sign England forward Nathan Hughes from Wasps this summer and Willie Le Roux will leave the Ricoh Arena.
Georgia international Zurabi Zhvania signs a new deal with Wasps that will keep him at the club until the summer of 2020.
Wales forward Taulupe Faletau's Champions Cup return shows he is ready for the Six Nations, says Bath director of rugby Todd Blackadder.
Audio & Video
Leinster fly-half Johnny Sexton says Wasps will believe they are capable of repeating their 2015 pool win when they travel to face the Heineken Champions Cup holders next month.
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