The 29-year-old England international suffered the injury in Saturday's 22-16 Premiership win over Saracens.
The 21-year-old came off the bench against Saracens on Saturday to create Charlie Sharples' match-winning try.
But Saracens, helped by Glen Jackson's 14 points, did enough to claim the win.
Saracens are the only other Aviva Premiership side holding a silence, the league has confirmed.
The player is not registered for Saracens' pre-Christmas Heineken Cup games against French side Racing Metro.
Wasps' defence ensured they maintained their record of never losing to Saracens at Adams Park.
In Pool Four Biarritz and Saracens look a class above Glasgow and Italian minnows Viadana.
Saracens rugby club has submitted plans to transform Copthall into a multi-purpose sports facility.
Saracens chief executive Edward Griffiths said he was disappointed with the panel's final verdict.
He hasn't had a run of game but played against Saracens the other day.
Last weekend the semi-finals took place, with Bourgoin beating Worcester and Northampton seeing off Saracens.
Meanwhile, Saracens have strengthened their backline for next season by signing Edd Thrower from Wasps.
Saracens wasted the advantage they were given when prop Nick Lloyd was yellow-carded for punching.
But Danaher believes after a hard pre-season the Exiles are more than capable of matching Saracens.
Early errors allowed Saracens full-back Alex Goode to put his side 6-0 ahead with two penalties.
Jackson missed the conversion from wide out as Saracens took a scarcely-deserved 11-6 lead into the break.
Dwayne Peel, Eifion Lewis-Roberts (both Sale) and Rhys Gill (Saracens) are also automatically available for their clubs.
But it was Saracens who got the dream start, scoring the fastest try of the Premiership campaign.
Prop Carl Hayman (Newcastle), winger Doug Howlett (Munster) and Chris Jack (Saracens) are all moving to Europe.
Saracens, whose team included nine South Africans, struck back with tries from Ernst Joubert and Brad Barritt.
He did a good job at Bath and was taken to Saracens, partly for his leadership qualities.
"He was clearly angry, as are all the players and the coaching staff, " said the Saracens lock.
For all Castaignede's promise, Saracens had looked in disarray after Hinshelwood's double onslaught in just 16 minutes.
BBC: SPORT | Rugby Union | English | Worcester 18-19 Saracens
The result extends Saracens' winning run to seven matches, putting them only three points behind leaders Leicester.
Bath responded with a Butch James penalty but Saracens ended the half stronger, David Strettle going over.
Premier Rugby have called a meeting next week between the Saracens and Northampton to clear the matter up.
Farrell's new coach at Saracens Alan Gaffney is also expecting great things of the two-time Man of Steel.
When Saracens secured turnover ball Jackson countered from just outside his 22, chipped over the defence and regathered.
Irish lost their first match against Saracens 18-14 and Danaher said a poor first-half display let them down.
Saracens are now second in the table, level on points with Northampton, but have played two games more.
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