I doubt they would buy high(ish) on a guy who finally broke out as a reliever, just to thrust him back into some kind of swing role
If they want Keller I would guess it's just to be a leverage RP
My guess is that the Jays are now shifting gears and they will wait for someone to come to them, out of two buckets. Good RP bucket and Good Bat bucket.
Bucket 1: Keller, Weaver, Fairbanks, Seranthony, Suarez, etc.
Bucket 2: Bo, Bregman, Bellinger, Tucker...