The Tex-Mex-themed restaurant already has branches in Ecclesall Road and Devonshire Street and took to Twitter to announce the arrival of a new outlet to fans.
The firm's UK Twitter account posted: "Glasgow, Brighton, Barnsley and Sheffield - popping up in your town before the end of the year. You're welcome."
In response to one follower asking where the new restaurant would be, the reply was: "We'll be announcing where soon!"
The firm, which has 7,000 branches across the globe, is expanding across the UK and already has several other outlets in South Yorkshire.