Bristol return to rugby's top flight by launching the new 2018-2019 Premiership season against rivals Bath.
Georgia international prop Zurabi Zhvania has agreed a deal to join Wasps.
Holders Leinster have been drawn against Wasps, Toulouse and Bath in Pool One in next season's Champions Cup.
Danny Wilson has reneged on a move to Wasps in order to join Scotland as assistant to Gregor Townsend.
Wasps have re-signed South Africa international Nizaam Carr on a permanent contract.
Elliot Daly is relishing facing Wasps team-mate Willie Le Roux in Saturday's first Test between England and South Africa.
England lock Joe Launchbury is a fitness doubt for Saturday's Test with South Africa in Johannesburg, live on Sky Sports.
Paul Gustard has defended England's decision to select New Zealand-born Brad Shields for their three-Test series against South Africa.
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