Props Taufau Filise and Scott Andrews are expected to start against Gloucester, with Rhys Thomas at hooker.
Of the other props on the region's books, John Yapp is still a few weeks off returning having recovered well from his torn bicep, Sam Hobbs is ruled out after suffering a head injury in the win over Newcastle Falcons, and Gethin Jenkins is on Wales duty.
Forwards Gareth Williams and Deiniol Jones are also injured, while Bradley Davies, Martyn Williams, Sam Warburton, Richie Rees, Tom James, Leigh Halfpenny, Jamie Roberts and Tom Shanklin are with Jenkins in the Wales squad.
Young is expected to turn to his regional feeder clubs from the Welsh Premiership for back-up.
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