The European Champions Cup pool stage will conclude this weekend, with four quarter-final places up for grabs after Munster, Saracens,
Joe Marler has been added to England's lengthy list of forward casualties leading into their Grand Slam defence.
Chris Robshaw will miss the entire RBS 6 Nations after undergoing shoulder surgery in the latest blow to England's resources.
Head injuries in rugby union is a subject which brings much discussion and debate in the sporting world.
After a busy month of autumn internationals, attention will quickly turn to this season's RBS 6 Nations Championship.
Eddie Jones' England completed a clean sweep of victories this autumn.