12 Dec, 14:42
Prop Cian Healy is expected to miss the start of the 2014 RBS 6 Nations after undergoing surgery on his injured ankle on Wednesday.
A shoulder injury sidelined him until this season when he returned to action with the Rotherham Titans in the English Championship.
Dougall, who also captained the Titans in a number of games, was educated at that famous rugby-playing establishment, Barnard Castle School, where he captained the first team and indeed played for the Ireland U-19s while still at school.
Sean is Irish-qualified through his father who was a Methodist College Belfast first team winger.
He joins a growing number of young Exiles who are now based with Irish provinces, following in the footsteps of the Ruddock brothers at Leinster and Conor Joyce in Ulster in recent seasons.
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