Leicester Tigers were forced to struggle past London Welsh for a bonus-point Aviva Premiership victory.
Leicester welcome back Brad Thorn and Graham Kitchener as they face already-relegated London Welsh at Welford Road.
Former England international back Olly Barkley has extended his contract with London Welsh.
London Welsh have confirmed new contracts for front-rowers Nathan Trevett, Koree Britton, Nathan Morris and Ben Cooper.
Tom Varndell helped himself to a hat-trick as Wasps registered a 40-13 victory over relegated London Welsh.
Ashley Johnson will make his first start at hooker for Wasps when they visit relegated London Welsh on Sunday.
Ulster have announced the signings of London Welsh players Peter Browne and Paul Rowley.
London Welsh have appointed James Buckland as their forwards coach.
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