Adrian left the Hammers at the end of last season.
"I am bético, but not antisevillista," the Spaniard told Canal Sur.
"I told him that he was going to a very good club that have done well in recent years and that he is going to enjoy the city.
"I enjoyed playing with him. He had a good contract at West Ham and made an effort to move over there (Sevilla).
"If they give him confidence… that's like all players. He is a fighter, committed and professional.
"What are we going to say about the Sevillians… I have told him where he can live. Not that have we been able to talk much because he has gone directly to the national team (Mexico)."