Cuellar left Rangers fro Aston Villa three years ago in order to boost his chances of breaking into the Spain national team.
Cuellar told Sky Sports News: “I only left because I was told if I wanted to have a chance of playing for the national team then I had to leave Scotland and move to the Premiership or return to La Liga.
“Three years ago, I thought I had a chance and I did what I had to do. I was listening to people who were part of the national team – I did what they advised.
“But now I can follow my own dream and I won’t let other people tell me what is best.
“I know myself what will make me happy. I was so happy at Rangers and this time, if I get the chance to return, then I will follow what I want to do.”
“It’s exciting because Rangers, for me, has so many good memories,” said Cuellar.
“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?”
Current Rangers manager Ally McCoist was part of the coaching staff at Ibrox when Cuellar played for the club.
He continued: “I had a good relationship with Ally McCoist. He is a great personality and I think it would be good fun to work under him as manager. But that doesn’t mean it would be one big joke.
“The thing about Ally is that he knows how to separate the jokes from the work. I saw that in my time in Glasgow. I think he will make an excellent Rangers manager.”
