Gloucester's Andy Hazell will miss Gloucester's Zurich Wild Card final on Saturday and England's summer international schedule after medical experts advised a period of rest following a recent head injury.
The 27 year-old open-side flanker saw a neurologist this week, and after further discussions with both the Club's and England's medical teams, it was agreed that Hazell would miss the final club game of the season and England's fixtures against the Barbarians and the Churchill Cup tour.
Hazell is still suffering symptoms of concussion after two knocks to the head against London Irish at the end of March and against Saracens on 30 April.
The medical teams will monitor Hazell's situation throughout the summer and he will return to pre-season training when he is symptom-free.
Commenting ahead of Gloucester's Zurich Wild Card final, Hazell said: "It's frustrating not to be part of Gloucester's final run-in and England's summer fixtures, especially having been injury-free all season.
"But I've seen the specialists and they've advised the rest period over the summer, by which time hopefully I'll be symptom-free, which will allow me to get back and fully fit for next season. It would have been nice to finish off what has been a good year for me personally with the England tour, but it just wasn't meant to be."
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.
Gloucester Rugby have added to their front row strength in depth for next season with the signings of Paul Doran-Jones, Paddy McAllister and Nicky Thomas from Harlequins, Aurillac and the Ospreys respectively.