The 37-year-old departed Paris Saint-Germain when his contract expired at the end of June, and he was heavily linked with a move to Saudi Arabia earlier this summer.
There is also believed to have been interest from the MLS, but Ramos has completed a return to Sevilla, 18 years after leaving Estadio Ramon for Real Madrid.
According to The Sun, after Raphael Varane's injury, Man United approached the experienced centre-back, offering him a one-year contract worth £73,000 a week.
However, the report claims that the former Spain international immediately turned down the bid, as he was only interested in securing a return to Sevilla.
Ramos broke down in tears when discussing his return to Estadio Ramon and admitted that he had regrets over his exit from the club and celebration in front of the Sevilla supporters in 2018 when he scored against them.
«Today is a very special day. I'm finally coming home, I'm looking forward to feeling the Sevilla shirt again and pulling on this badge,» he told Sevilla TV.
«Eighteen years have passed since I left, I think I've made mistakes and I want to take the opportunity to apologise and apologise to any Sevilla player who has felt offended by things and gestures I could have done at the time. We are all in the same boat, we are all from the same family and we have too many people outside to fight amongst ourselves.
»It makes me emotional to talk about my grandfather. The image I left with is very ugly, he left here crying. In the end we have been Sevilla fans since birth.
«The last memory of my grandfather is very ugly, leaving here
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