On Saturday, Jon Heyman dropped this tweet:
Pedro Grifol is on the #SFGiants manager list and is expected to get an interview. The well-regarded Royals quality control/catching coach is also a candidate in KC.
— Jon Heyman (@JonHeyman) October 5, 2019
Heyman has been, historically, a fairly well-connected and accurate source of rumors and breaking news and in the case of managerial candidates not currently on playoff teams, it’s probably not that difficult to find out who’s up for which job(s); but, the team hasn’t confirmed anyone beyond Hensley Meulens and Ron Wotus, so for now, we’ll treat this as a rumor — like, a 97% confirmed rumor.