ENGLAND international Olly Morgan will wear the number 15 shirt for Gloucester's pivotal Heineken Cup match against Bourgoin tomorrow.
Iain Balshaw moves to the wing to cover the absence of Lesley Vainikolo, who has returned to New Zealand for a week because of a family bereavement.
"Our thoughts are with Lesley and his family at this time and the club will give him all the support he needs before he returns to the first team squad," said head coach Dean Ryan.
"Family is very much central to Lesley's life and for that reason we respect his wishes to be with them at this time and want his privacy to be maintained. We will not be making any further comment until he returns."
The rest of Ryan's line-up remains virtually intact from the one that has seen Gloucester establish a narrow lead in Pool Two - although he is without second row Marco Bortolami (calf) and breakaway flanker Andy Hazell (twisted knee).
Mike Tindall and Anthony Allen will resume their centre partnership having missed the EDF Energy Cup victory over the Dragons and James Simpson-Daniel returns to the wing.
Ryan Lamb is partnered by Rory Lawson at half-back.
"We need to combine experience with flair and a cutting edge and we believe this backline provides that," Ryan added. "We are heading for a confrontational environment, an environment in which Bourgoin have a good record and we must be ready to handle that.
"The pool is very much still alive which is why these two back-to-back games are so important. Preparation has been good, we have learnt a great deal over the last year or so in this competition about how to win games like this and we must put that into practice tomorrow."
Ryan's forward pack is also experienced. Nick Wood, who signed a new two-year contract extension last week, starts at loose-head, Olivier Azam at hooker and Carlos Nieto at tight-head.
Peter Buxton will skipper the side from the second row alongside Alex Brown. That allows the tough tackling Alasdair Strokosch to wear number six, Akapusi Qera comes in for Hazell and Gareth Delve, outstanding against the Dragons, wears eight.
"Everyone appreciates the intensity levels of this game and central to that will be the performance of our forwards," Ryan said. "We have stacked up well in this competition and we must maintain that.
"This is a game we are thoroughly looking forward to as a group because of its significance."
Ryan has split his bench four-three in favour of his forwards. Andy Titterrell and Christian Califano will be the front row replacements Will James will cover lock and Luke Narraway the back row.
Scrum-half Gareth Cooper, stand-off Chris Paterson and utility back Leon Lloyd are the three-quarter replacements.
GLOUCESTER (v Bourgoin, tomorrow): Olly Morgan; James Simpson-Daniel, Mike Tindall, Anthony Allen, Iain Balshaw; Ryan Lamb, Rory Lawson; Nick Wood, Olivier Azam, Carlos Nieto, Peter Buxton (capt), Alex Brown, Alasdair Strokosch, Akapusi Qera, Gareth Delve. Reps: Andy Titterrell, Christian Califano, Will James, Luke Narraway, Gareth Cooper, Chris Paterson, Leon Lloyd.
Speaking to the media following the 31-33 West Country Challenge Cup defeat to Exeter Chiefs at the Memorial Stadium, Director of Rugby David Humphreys was full of praise for his side's battling qualities in a bruising encounter but concerned about the injuries picked up.
The West Country Challenge Cup fixture against the Exeter Chiefs at the Memorial Stadium in Bristol on Saturday (kick off 3pm) will be Gloucester's last chance to work on things like new combinations says Director of Rugby, David Humphreys.
Speaking after the 30-21 West Country Challenge Cup defeat at Bath, Director of Rugby David Humphreys spoke of the improvements his team are making as preseason progresses but acknowledges that there is still work to do ahead of the start of the Aviva Premiership.
Speaking to the local media ahead of Saturday's trip to Bath Rugby in the West Country Challenge Cup, front rower Nick Wood spoke of the hard work put in across the extended preseason and highlighted the competition for front row spots in the squad.
Gloucester have named a 30 man squad for the latest round of West Country Challenge Cup action against Bath on Saturday, with Director of Rugby David Humphreys stressing the need to keep an eye on player workload ahead of what will be a long, tough season.
Describing the 50-7 West Country Challenge Cup win over Bath on Sunday as a '...good hit out...', wing Charlie Sharples admitted that it had been a good opportunity to put into practice things that the squad have been trying out in training in recent weeks.
Speaking to the local media after the 50-7 victory over Bath Rugby on Sunday, David Humphreys was happy with his squad's effort, with the most important aspect being the game time earned by his players.
Gloucester make wholesale changes to the side that started at Exeter last Saturday as they prepare to take on Bath at the Memorial Stadium, Bristol on Sunday in the West Country Challenge Cup (kick off 3pm). The Director of Rugby told GRTV that the players are raring to go and that he's looking forward to seeing different combinations in action.