The Spain international, who has won the World Cup and Champions League, says his ambition is to spend his final seasons back in Seville, wearing the green-and-white shirt in front of the supporters who helped shape his career.
"I would like to finish my career there, spend my final years at Betis, at home," Ruiz told OKDIARIO while attending Spain's national-team camp in Las Rozas.
The midfielder's connection with Betis goes beyond his time on the pitch. He also remembers the support his family received during his early years, particularly the sacrifices made by his mother to raise him and his siblings.
Asked what he would say to her if he could return to those childhood days, Ruiz had a simple answer.
"Thank you."
He admitted that, as a boy, he did not fully appreciate everything his mother did for the family. Only with time did he understand the effort involved in bringing up three children and helping him pursue his football ambitions.
"Without her help, it would not have been possible," he said, reflecting on the journey that eventually took him into professional football.
Betis also played an important role in supporting the family during that period, something Ruiz has not forgotten. It is a significant part of the reason he still regards the club as home and wants his career to come full circle there.
He hopes that one day he will have the opportunity to return, reconnect with the supporters and give the club a final chapter in his playing career.
"I hope it can happen one day and that I can return and wear the Betis shirt," he said.
Ruiz has since enjoyed success at the highest level of the game, winning the World Cup with Spain and the Champions League with Paris Saint-Germain. Yet the prospect of ending his career at Betis remains a personal ambition.
His comments underline the lasting importance of the club in his life, not simply as the team where he developed as a player, but as an institution that supported his family when his professional future was still uncertain.
For Ruiz, the dream is not about adding another major trophy or seeking a final challenge abroad. It is about returning to the place where his journey began and finishing in front of his own supporters.