Scotland head coach Vern Cotter has pulled three Glasgow players from weekend action.
England head coach Stuart Lancaster has revealed full-back Mike Brown is nearing a return to action.
Flanker Magnus Lund has signed a new two-year deal with the Sale Sharks.
Luther Burrell will miss the early part of England's build-up to their clash with Scotland after picking up a calf strain.
France lock Pascal Pape has lost his appeal against a 10-week ban for kneeing Ireland's Jamie Heaslip in the back.
New Zealand full-back Kevin Locke's proposed move to Scottish rugby union is off.
Exeter Chiefs are working on a project to discover what happens to the brain of a player when they are concussed.
Saracens have signed versatile Italy back-rower Samuela Vunisa from Guinness Pro 12 club Zebre.
Sam Burgess insists he has no thoughts about quitting rugby union and returning to league.
Kyle Sinckler will miss Harlequins' clash against London Irish at the weekend after being handed a one-week ban.