Sale Sharks appear to have signed Denny Solomona after registering the player in their Champions Cup squad.
Warren Gatland feels George North needs to take some time out from rugby after suffering another head injury last weekend.
Northampton have confirmed George North will not play until he is cleared by an independent expert.
Australian international forward Will Skelton has joined Saracens on a short-term deal.
Ireland international lock Dan Tuohy has joined Aviva Premiership side Bristol with immediate effect.
Worcester Warriors have signed Samoa international forward Chris Vui on a short-term deal until the end of the season.
Connacht boss Pat Lam will join Bristol as their new head coach in June, the Aviva Premiership club has announced.
Saracens suffered their second Premiership defeat of the season, going down 14-11 to Bath at The Recreation Ground.
Newcastle secured back-to-back Premiership victories for the first time since February as they beat Harlequins at home.
Pat Lam joins Bristol in June and has reinforced his commitment "irrespective as to what happens in the short-term".
Northampton director of rugby Jim Mallinder denied that George North had been knocked out during Saturday's 19-11 defeat at Leicester.
Wasps reclaimed second place in the Premiership after shrugging off a number of injuries to beat Worcester at Sixways Stadium.
Leicester reclaimed fourth in the Aviva Premiership after a 19-11 victory over Northampton in a fiercely fought derby.
Gloucester secured a crucial try-bonus point victory as they defeated dogged Bristol 26-18 at Kingsholm.
Maro Itoje was praised for his performance as he played the full 80 minutes on his comeback as Saracens lost 14-11 at Bath.
Exeter Chiefs rose to fourth place in the Aviva Premiership with a 21-3 victory over Sale at the AJ Bell Stadium.
England star Maro Itoje will return to action for Saracens on Saturday when they take on Bath at the Rec.
All the team news for Saturday's Aviva Premiership clashes, including Leicester's derby match against Saints.
Wales international James Hook will return "home" to Ospreys next season after six years away.
Tim Swiel's late penalty handed Harlequins a frantic 21-20 victory over Bath at the Stoop.