I think Mike will be the one to cause Hector's condition and that will alert Gus to his presence. "You're the man, who crippled my lifelong enemy? Come work for me."

The inclusion of locations is a nice nod to Breaking Bad that doesn't feel quite as in your face as some of the character cameos can be. Had to look it up to confirm, but The Dog House is a returning local from Breaking Bad, most memorably from "Blood Money" when Jesse starts giving away all of his… well… blood money.