The 30-year-old is among a number of candidates tipped to replace Victor Valdes, who has told the Spanish champions he wants to leave this summer.
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"I have three more years with Liverpool. I'm satisfied, comfortable and my family are very happy," Reina told Spanish radio station Cadena Ser.
"Rumours are difficult to control but it's flattering when a club like Barca are interested in you.
"I don't know if there has been contact between the clubs or with my agent. At the moment I don't think there's anything serious."
Reina began his career in Barcelona's youth system before leaving for Villarreal in 2002, but the goalkeeper is adamant he has no bad feelings towards the club.
"The years I was at Barcelona were very good, I don't have any bad feelings about not succeeding there," he added.
"I played more than 50 games, when I was less than 20, it helped me grow a lot.
"I would've liked to have played there more, of course, but there's no need to over-dramatise things."