Last week England coach Andy Robinson called on the Premiership clubs to stick to the agreement to prevent the players suffering burn-out.
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The 32-year-old England captain could miss the remainder of the Premiership season and may also miss his country's tour to New Zealand in June.
Walcott was included in England's squad despite not having played a Premiership match for Arsenal since his multi-million pound move from Championship side Southampton in January.
Only Gloucester have scored more Premiership tries than Northampton this season and England manager Martin Johnson will be looking to the Saints pair to provide some much-needed inspiration.
But the 30-year-old, who is set to move from Sale to Saracens at the end of the Premiership season, broke his foot during England's defeat by South Africa in November.
The Springboks suffered a dismal start to their northern hemisphere tour as the Premiership champions overcame the handicap of missing England internationals Tom Croft, Lewis Moody, Jordan Crane, Dan Hipkiss and Louis Deacon as well as another eight injured players.
The 30-year-old, who was born in South Africa, qualifies for England through residency and has been selected after an impressive Premiership season.
And, much as we've loved working on the FA Cup and England live, we do have the comfort of the Premiership highlights contract until 2010 - and the World Cups in 2010 and 2014.
Heavy snow showers have already swept across parts of eastern England and Scotland, forcing the cancellation of Middlesbrough's premiership clash against Fulham on Teeside.
The 29-year-old England international suffered the injury in Saturday's 22-16 Premiership win over Saracens.
The former England A international captained Leeds to their first ever promotion to the Premiership and also lifted the Powergen Cup at Twickenham in the absence of then skipper Iain Balshaw, who had been injured in the final.
The England lock made his Leicester debut in September 1999 and has won five Premiership titles and two Heineken Cups with the Tigers.
And the Otley-born three-quarter has a chance of lifting silverware both for club and country this season with England still on for the Six Nations title and Gloucester third in the Premiership.
Rotherham had launched a legal bid against England Rugby Limited (ERL) and Worcester over the Warriors' promotion to the Zurich Premiership.
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Cueto, who scored two tries on his England debut against Canada in 2004 and shares the record for scoring tries in eight consecutive Premiership games, is perhaps best known for a try that never was.
Pearce, who won 78 England caps, was tipped as a potential successor to the then boss of the senior England team, Sven-Goran Eriksson, in 2006 when City were going strong in the Premiership.
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If Croft returns on schedule, Leicester's Guinness Premiership match against Gloucester on 20 February would be his only chance of action before England's third game of the championship, against Ireland on 27 February.
Benayoun's header was misplaced and could not have fallen kinder for the England midfielder as he silenced the majority of the Upton Park crowd, firing home his 13th Premiership goal of the season.
There had been an issue over the availability of England-based Wales players since Premier Rugby Limited, the umbrella body that represents the Guinness Premiership clubs, advised Peel and Cooper to return to their clubs after the New Zealand clash.
Cipriani, who suffered a horrific ankle injury in the Premiership play-off semi-final victory over Bath in May 2008, has not played for England this year after falling out of favour.
Fellow England internationals Olly Barkley and Ollie Smith will also feature as Bath and Leicester meet in one of five all-Premiership clashes.
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