Four matches in the English Premiership including Saracens v Harlequins - listen to BBC Radio 5 Live Sports Extra and local radio commentaries.
Wigan Warriors will not hold Wales defence coach Shaun Edwards to his previously announced agreement to return to the club.
Team news as Gloucester host Wasps in Saturday's Premiership fixture at Kingsholm (15:00 GMT).
Utility back Rob Miller signs a new deal at Wasps, although the contract terms remain undisclosed.
Audio & Video
When Dai Young won his 50th Wales cap, son Thomas was one of the then-captain's mascots. On Saturday, Young junior starts for Wales against Italy.
How to get into rugby union
How to get into rugby union - through the age groups up to the 15-player game or try rugby sevens, which made its Olympic debut in 2016.
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