The Argentine club's vice president Omar Solassi told Catalan radio that while the Blaugrana have not made an approach they understand what his club want.
"Balanta is worth €15 million," the River director told Esports COPE.
"He is a great player with a great future.
"We would listen to offers for him, but Barca have made not official offer to us for him.
"I think that Balanta would be liked by Tata Martino It would not seem odd to me if Barca are interested in him.
"He is a player that will come good whichever team he plays for.
"Balanta is not like Mascherano nor like Pique. He is a different sort of player with more presence. He is a strong defender, is good on the ball and knows how to play going forward."
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