He got hyped up after one of the Singha 7's tournaments, but not followed Sale closely enough to see how he's faired in the normal season games.
He's seemed a prospect on the limited times I've seen him. But guess he has some notable players (Ashton, Jennings, Yarde, Solomona) ahead of him so maybe he's looking for gametime elsewhere.
I would take a punt on him. I think Sirker has another season in the Academy/A Team as part of his 2 yr transition to 15-a-side. So Odogwu would certainly add some depth to our wing options.