Northampton Saints have been dealt a blow with the news that England prop Alex Corbisiero has been ruled out until "early 2015."
The 26-year-old had to come off in Saturday's win over Bath after picking up a shoulder injury.
Scans have now revealed that Corbisiero has suffered a ligament tear which will require surgery.
It means that the former London Irish man will also miss England's autumn internationals, alongside other key front players Tom Youngs, Mako Vunipola and Dan Cole who are also set for spells on the sidelines.
Northampton Saints star George North says his side won't dwell on last weekend's surprise defeat to Wasps.
The reigning Premiership champions lost for the first time this season at Adams Park, but North is hopeful of putting things right on Sunday at Newcastle Falcons.
"Obviously Gloucester went so well, and when you go down to Wasps, it's a completely different atmosphere and a different game.
But for us, it was a bit of an eye-opener and we'll take that on the chin and work on the next one."
Newcastle Falcons v Northampton Saints, Aviva Premiership, Sunday 21 September, 2pm
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Northampton Saints and England forward Tom Wood believes the fear factor has gone out of their squad as they chase a League and European Cup double at Twickenham today (Saturday)
The Saints bid for their 1st Aviva Premiership title to add to the Amlin Challenge Cup secured last week against Bath.
"I think we've matured a lot as a team," said Wood. "I think we've gone there before and I think we've got the hurt of the last four years behind us spurring us on.
"We've recruited well, and we've a couple of British Lions come into the team which has added some firepower to the team.
"We've been developing our culture behind the scenes. I think we're starting to see the rewards of that out on the pitch.
"We've been a little bit 'rabbits in headlights' at times. We've had a lot of success in getting to finals and semi-finals but not quite known how to control those big days
"I'd like to think we're in a slightly better place now."
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Northampton Saints winger Paul Diggin will retire from top flight rugby at the end of the season, the club have announced.
The 29-year-old will concentrate on his role as a coach with the Saints' academy.
“I could not have asked for more from my playing career,” he told the club's official website.
“I’ve played in a Heineken Cup final, helped my team win at Twickenham and have collected a number of winner's medals.
“But time has to move on and I’m delighted to be a part of the academy coaching team.
"We’ve got some exciting talent coming through, and hopefully I can help them develop as players and know what it means to play for the Saints."
Sir Ian McGeechan was guest speaker at Wymondham RFC's annual players' dinner in Norfolk.
Sir Ian won 32 caps for Scotland, coached three tours of the British and Irish Lions, and has served as director of rugby to Scotland, Northampton Saints, Wasps and Bath.
Northampton Saints captain Dylan Hartley has been named the Aviva Premiership Player of the Month for January.
The 27-year-old, who's currently on international duty with England, beat his Saints teammate George North to the accolade.
Bath youngster Anthony Watson, Saracens pair David Strettle and Alex Goode, and Gloucester winger Jonny May were also shortlisted.
A number of Northampton Saints stars have once again been included in England's starting line-up to face Scotland in the RBS 6 Nations this weekend, as Stuart Lancaster's men look to avenge the opening round defeat to France.
England looked to be heading towards a hard-fought victory in Paris, but a last-gasp Gael Fickou try ensured that they left empty handed.
Saints centre Luther Burrell impressed on his debut in the showdown, scoring a debut try, and he will once again partner Gloucester man Billy Twelvetrees in midfield.
Fellow Northampton players Dylan Hartley, Courtney Lawes and Tom Wood are also named in a unchanged line-up, while scrum-half Lee Dickson is among the replacements at Murrayfield.
Norfolk-born hooker Tom Youngs misses out to Hartley in the front row, but will be on the bench.
However, brother Ben has once again missed out on making the squad, after being overlooked by Lancaster.
England team to face Scotland:
Mike Brown (Harlequins), Jack Nowell (Exeter Chiefs), Luther Burrell (Northampton Saints), Billy Twelvetrees (Gloucester), Jonny May (Gloucester), Owen Farrell (Saracens), Danny Care (Harlequins)
Joe Marler (Harlequins), Dylan Hartley (Northampton Saints), Dan Cole (Leicester Tigers), Courtney Lawes (Northampton Saints), Joe Launchbury (London Wasps), Tom Wood (Northampton Saints), Chris Robshaw (Harlequins, Capt), Billy Vunipola (Saracens)
Northampton Saints have signed Samoan full back Fa’atoina Autagavaia as cover for injured pair Ben Foden and James Wilson.
The 25-year-old has been allowed to join the Saints under the injury dispensation rule and will bring crucial international experience having amassed eight caps for his country.
Speaking to the club's offical webiste, Director of Rugby Jim Mallinder said that the arrival of Autagavaia will provide a welcome boost for his squad.
“Fa'atoina has shown over the past 18 months that he has the ability to succeed at international level."
"We are confident that he'll be able to fit in, especially alongside the Pisi brothers and Kahn Fotuali'i."
“With Ben Foden and James Wilson both out of action we’re a bit light at full back, so Fa’atoina will add to our strength in depth in what is a crucial position.”