George North will not play for Northampton again until he has been assessed by an independent expert in head injuries.
The Welsh wing, who has suffered a series of concussions, was cleared by Saints medics to continue playing during Saturday's Aviva Premiership clash with Leicester despite replays suggesting he had been knocked out following a tackle from Adam Thompstone.
Questions have been raised about whether the player's welfare was best served by his return to action but Northampton insist they were fully in compliance with World Rugby's head injury assessment protocols.
The club does admit, however, that the footage available to them at the time was limited and have taken the precautionary steps of withdrawing North from action pending the specialist's verdict.
Eddie Jones predicts the best win of his unblemished England tenure will de delivered against Australia as he began landing early verbal blows ahead of Saturday's showdown at Twickenham.
As the dust was still settling on a stirring 27-14 victory over Argentina in which Elliot Daly was sent off in the fifth minute, Jones immediately turned his attention to staging a fourth successive victory over the Wallabies.
England's head coach highlighted their frailty at the scrum and is to request a meeting with referee Jaco Peyper to ensure it is officiated properly, and also resumed hostilities with the Australian media, who he conclusively outmanoeuvred during the 3-0 series whitewash in June.
We are looking forward to the game next weekend. The best win is to come - Australia will be the best win. All we want to do is beat Australia next week, that's all we want to do. And then beat them next year and the year after that.
It's going to be a bit of fun because the Australian media last June was very disrespectful to us. I'm sure they are going to be at it again, so we've got to be prepared for that. I'm also very keen to have a chat to the referee about the Australian scrummaging. They have got some issues with the way that they scrum so we need to have a meeting with the referee.
We will invite the Australian coaching staff to come along and will submit an agenda and make sure that everything is above board. They were penalised four times in a row against France so they have got some technical issues. I am not going to sort them out for them.
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England have named George Kruis and Tom Wood in their pack for Saturday's penultimate autumn international against Argentina at Twickenham.
Kruis is restored to the second row after completing his recovery from ankle surgery and replaces Joe Launchbury, who is serving a two-match ban for kicking an opponent in last weekend's 58-15 victory over Fiji.
Wood ousts Teimana Harrison at openside flanker, a role he performed in the series opener against South Africa with his Northampton team-mate dropping to the bench in place of Nathan Hughes.
In total there are four changes to starting XV that routed Fiji, with Mike Brown preferred to Alex Goode at full-back and Jonny May displacing Semesa Rokoduguni on the right wing.
"Selection was interesting this week, but it shows how competitive and how much depth we are developing," head coach Eddie Jones said.
Joe Launchbury has been ruled out of the remaining two matches of England's autumn series after being found guilty of kicking Fiji's Asaeli Tikoirotuma.
Launchbury will miss the clashes with Argentina and Australia after his boot connected with the head of the Fijian outside centre in the 42nd minute of a record 58-15 victory at Twickenham.
The act was deemed reckless rather than deliberate and the low end sanction for the offence of a four-week ban was reduced to two weeks due to Launchbury's admission of guilt, his previous clean disciplinary record and good conduct at the hearing.
Harlequins lock James Horwill should face a short stint on the sidelines owing to the gruesome compound fracture of his finger suffered in Sunday's 25-6 defeat at Leicester.
Former Australia captain Horwill asked physios to tape up his nasty finger injury so he could keep playing, immediately inking his name into rugby's hard-man annals. Stills of the horrific injury were quickly tweeted and duly went viral.
The 31-year-old had no option but to be withdrawn from the closing stages of the Aviva Premiership clash at Welford Road, and has since undergone corrective surgery.
Horwill's humour has remained undimmed in light of the nasty blow, as he took to social media to offer an update on his recovery.
"Finger is looking normal again and all good!" tweeted Horwill. His message continued: "Thanks to Doc @mike_hayton for seeing me on a Sunday. Appreciate all the messages. #COYQ"
Specialist hand and wrist surgeon Hayton is based in the north-west and was able to quickly carry out the procedures to repair Horwill's awful-looking injury.
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