Wales tight-head prop Craig Mitchell suffers a long-term shoulder injury while training with Bath.
Premiership champions Exeter will begin their title defence at Gloucester when the 2017-18 season starts on 1 September.
The 2017 Premiership Rugby Parliamentary Community Awards recognise contributions to grassroots programmes and those who have been transformed by them.
Premiership club Bath sign versatile forward James Phillips from relegated rivals Bristol on a one-year contract.
Audio & Video
Speaking to BBC Radio Bristol, Bath coach Todd Blackadder offers no comment over a reported move to sign Leigh Halfpenny.
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What's on BBC Sport this week
This week's sport on the BBC includes England's first Test against West Indies, the Women's Rugby World Cup and the Birmingham Grand Prix.