Henry Paul will miss the remainder of the season after Gloucester's medical team confirmed he has damaged the medial ligament in his knee.
The England international injured his knee playing for England Sevens at the World Cup in Hong Kong 10 days ago and was ruled out of last Saturday's win over London Irish.
Paul is set to be out for between six and eight weeks and will be unavailable for Gloucester's final three Zurich Premiership games, and any play-off matches.
Commenting on www.gloucesterrugbyclub.com Melville said: "It's a set-back but in some ways sums up our season. We have just had so many people injured at crucial periods, but you only have to look around the Premiership to see that other clubs are in a similar situation."
Commenting on www.gloucesterrugbyclub.com Paul added: "It's a big disappointment. I'm concentrating on getting back to full fitness, and will be right behind the rest of the team as we push for the top three slot in the Premiership and next season's Heineken Cup."
Paul, who has missed only a handful of games in four seasons with Gloucester, will see a specialist next week who will assess whether an operation is required.
Despite the injury, Nigel Melville's fly-half options could be boosted for Gloucester's next Premiership game at home to Leeds Tykes on Saturday 9 April with the return of Duncan McRae.
The Aussie stand-off has had an injury hit season, with his most recent knee injury ruling him out since the defeat away at Quins at the beginning of February.
As well as McRae's possible return, 22 year-old Brad Davies, who played the full 80 minutes at number 10 for Gloucester in the 13-12 win over London Irish on Saturday, was in commanding form for Gloucester against the Exiles at the weekend.
Gary Jones of Glevum Windows and Conservatories recently visited Kingsholm Stadium and the Cherry and White supporter spoke exclusively to Gloucester Rugby TV after marking two decades as a box holder in the Stowford Press Stand at Kingsholm. A great feat!
Speaking to the local media this week during preseason, new hooker Richard Hibbard said he was really enjoying putting in the hard work and being back to full fitness ahead of the 2014-15 season with the Cherry and Whites.
Nick Walshe was unveiled as Gloucester's new Backs and Attack Coach this week and spoke to Simon Ward for the RFU.com podcast about his excitement at joining Gloucester and working with a new group of players.
Speaking after the Third Test defeat to New Zealand, Ben Morgan told RFU.com that the loss was a disappointing way to sign off the summer tour but that the England team know what they have to do to be successful.
At the end of a tour when there have been so many positives for England, fly half Freddie Burns, who will start the third Test against New Zealand, was clear that the whole squad are focussed on signing off with a memorable win when he spoke to RFU.com
Speaking to Steve Jones of RFU.com straight after the 27-28 defeat to New Zealand on Saturday, Billy Twelvetrees spoke of the frustration of a missed opportunity, but stressed that England would lick their wounds and bounce back.
Freddie Burns contributed 12 points in England's 20-15 defeat against New Zealand on Saturday but, speaking after the game to RFU.com, preferred to talk about the many positives in the performance from Stuart Lancaster's side.
Gloucester number eight Ben Morgan put in a great individual performance as England were just pipped by New Zealand by 20 points to 15 in Auckland on Saturday. He told Steve Jones of RFU.com that the team will be in good spirits going into the 2nd Test in Dunedin.
It's been marked in the diary since the spring, but rugby will be returning to Kingsholm on July 31st. The holders host the Premiership Rugby Sevens for the third consecutive year, and Dan Robson can't wait to get on the field with the new look squad.
With almost a month of pre-season training with Gloucester Rugby already under his belt, James Voss is ready to hit the ground running as he links up with his Hartpury coaches and team-mates this week.
Premiership Rugby have today announced the fixtures for the second World Club Sevens tournament at Twickenham over the weekend of August 16-17 and Gloucester Rugby will kick off their Pool B campaign against Vodacom Blue Bulls.