Ramos, who left Sevilla for Madrid in 2005, saw his relationship with fans of his hometown club radically deteriorate earlier this year.
Skipper Ramos was absent against Espanyol after suffering a bang to his hip in the Champions League win over Napoli.
Barcelona's 4-0 defeat at Paris Saint-Germain in the Champions League last week has fuelled speculation that coach will not remain at the helm.
Schalke will sign winger Yevhen Konoplyanka on a permanent transfer from Sevilla, the Royal Blues' sporting executive Christian Heidel has confirmed.
Toni Kroos to Manchester United and Mario Gotze to Liverpool are some of the latest emerging rumours, courtesy of Football Whispers.
Dani Alves has criticised Barcelona's board for showing him no respect during his final three seasons with the club.