I agree with Petluv. Give him a week before intros. That way, if they ball up, he'd be better prepared to defend himself, worse case scenario. I know they're from the same breeder but you never know if for some odd reason they decide to be territorial. Especially if he's on meds that might change his scent.
(Ever notice how funny you or others smell when on antibiotics? Just take that into account. She might not recognize him via smell if he's on meds. Or a new diet. Or whatever.)
It may seem torturous to wait, but do it right the first time and you will save yourself a lot of hassle in the long run.