That's a little bit weird but Real Madrid is thinking about hiring Sergio Ramos and returning this player to Real Madrid while Sergio Ramos is getting old and he is out of good form.
In Marca, they say they need better defenders. They think playing with Alaba, Militão, and Rüdiger won't be enough for a season with 72 games and they will need more players. Since Ramos is not playing for any team, they can consider making his return and this can be a good chance for Ramos to end his career in a team like Real Madrid.
I didn't find this rumor anywhere and its not going to happen for Madrid in this case. We are aware that Ramos is a legend for Madrid, but to let him return to Madrid with his current condition which is already entering the final age for a professional athlete because it is already 38 years old then of course it will be very difficult for Sergio Ramos to be in the Madrid squad with a busy schedule and greater competitiveness than other clubs.
Even though there may be a rumor that ive never seen at this time but this will never be a reality because im quite sure this is just a news story that is intended to make player transfers busy, not to be a reality because indeed for player transfers, especially players who are quite popular in the end, its always an interesting topic that can be used as a headline in media .