Michael Fatialofa is showing "encouraging signs of improvement" and has been moved to the Major Trauma Unit at St Mary's Hospital.
Saracens owner Nigel Wray apologised for his "ill-considered approach" after a report detailed how Saracens fell foul of salary-cap rules.
The mercurial Finn Russell has been punished for a breach of team protocol just nine days before Scotland's first Six Nations game.
New Scotland captain Stuart Hogg proved if you don't ask, you don't get when he put himself forward to lead his country.
Saracens have given Premiership Rugby permission to release the full report into their salary cap breaches, which have led to relegation.
England captain Owen Farrell had the chance to confirm he would stay with crisis-hit Saracens, but instead he said talks were "ongoing".
France captain Charles Ollivon does not believe Saracens' impending relegation from the Premiership will have any impact on England.
Johnny Sexton expects to lead Ireland against Scotland in Dublin and Jordan Larmour is expected to be in contention.
Wayne Pivac is hoping Liam Williams will make his comeback from an ankle injury in the second round of the Six Nations against Ireland.