Marin is currently on-loan with the Spanish Liga outfit.
"If both Sevilla and me are happy to stay I can stay here forever," Marin told Estadio Deportivo.
"We'll see what happens in the summer. The first is to play, being fit and helping the team in the end of the season and then we will decide.
"If the fans want, Monchi (the sporting director) wants and the coach wants, why not?" Marin added.
"But the most important thing is to be fit and play.
"Speaking about a permanent move before that is not worthy because I can't help the team if I do not play."
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