Sinclair joins Stormers on loan
Published: 9 May 2012 15:300 comments
Sinclair will be available for Stormers' next four matches and will then return for the end of the season following international duty with Canada in June.
London Irish director of rugby Brian Smith said: "This is a great opportunity for Jebb to gain some valuable experience playing in the Super 15.
"He is a strong ball carrier and a player with great physicality on the field.
"We believe his style of play will fit well with the Stormers and he'll be a great asset to help them through the rest of their season."