Blake Shelton has teased there is a "good chance" he will announce a Las Vegas residency, similar to that of Carrie Underwood and wife Gwen Stefani.MORE: Blake Shelton sent this surprising text to Ariana Grande over The Voice rumorsThe country star admitted he's "always wanted" to do a Vegas show after first seeing Garth Brooks' one-man show in Sin City.WATCH: Blake Shelton and Gwen Stefani perform together in NashvilleAlthough Blake joked that he "probably waited too long because I don't play