GLOUCESTER'S Wales number eight Gareth Delve will have surgery on July 9 to assess the damage to his Anterior Cruciate Ligament (ACL).
Delve will undergo his operation following consultation with specialist Andy Williams and will be out of action for a number of months and will miss the start of the season.
The 25-year-old suffered damage to his left knee during Wales' summer tour to South Africa and Gloucester's head coach Dean Ryan said: "Gareth is a tremendous individual and an outstanding player - someone we wanted to build around for the future.
"This injury is obviously a significant set-back to him and the club but I have no doubts he will be back in Gloucester colours next season. He has drive, determination and a willingness to succeed and I am sure that will come through in his recovery."
Delve made 20 appearances in all competitions for Gloucester last season following his summer move from Bath.
Meanwhile, flanker Akapusi Qera will see a specialist in London on Monday to determine the extent of his knee injury.
Skipper Billy Twelvetrees told GRTV after the win in Brive that the game could have been a tough one to get up for, but that his Gloucester team mates did themselves proud on the night and got a big result.
Reflecting on the 31-20 victory in Brive on Thursday evening, Director of Rugby David Humphreys said that clinching a home European Rugby Challenge Cup quarter-final was the overall aim and duly achieved.
Gloucester may have already clinched a home European Rugby Challenge Cup quarter-final, but Director of Rugby David Humphreys wants his side to finish the pool stages on a winning note in Brive on Thursday evening.
Speaking after Saturday's win, James Hudson was happy to record a bonus-point win against a hugely physical Oyonnax side as Gloucester secured their passage into the European Rugby Challenge Cup Quarter Finals
Billy Burns was a try scorer on his first European start for Gloucester and, speaking after the game, admitted that it was good to get the five points although there are still things to work on before the trip to Brive.
Connacht's 30-20 win in La Rochelle on Saturday evening means that they are the third best placed runners up and will come to Kingsholm for the quarter-final of the European Rugby Challenge Cup in early April.
Gloucester Rugby today confirmed that supporters who have renewed their Club Membership for next season by March 27th 2015 will receive a free ticket for this season's European Rugby Challenge Cup quarter-final at Kingsholm in April.
It was a bit of an arm wrestle at times, but two tries in each half did the trick for Gloucester as they defeated CA Brive by 31 points to 20 at the Stade Amedee-Domench on Thursday evening to secure top seeding for the quarter-finals.
As the Cherry and Whites aim to make it six from six in the European Rugby Challenge Cup against Brive (19:45 ko) this evening, Dan Robson is fully focused on continuing the fine momentum of recent weeks.