He has been linked with a move back to the Glasgow giants as new boss Ally McCoist prepares for his first campaign at the helm.
Cuellar told the Daily Record: "I have to find out what Villa want me to do but I'm very surprised to hear that Rangers want me back.
"It's exciting because Rangers, for me, has so many good memories.
"It's exciting if there is a possibility to go back because all of those good memories come back - the city, the club, the people, how much they loved me and how much I loved them.
"Then there is the Champions League and the chance to win trophies again. Who wouldn't be excited about something like that?"