If the Miami Marlins trade Christian Yelich, they want a "huge return."

The Atlanta Braves have interest in Yelich, but the Marlins have been demanding top prospect Ronald Acuna.

"The Marlins told the Braves, 'Look, we'll do a three- or four- or five-for-one, but Ronald Acuna has to be in it or we don't go even to the second player,'" Peter Gammons said on MLB Network.

MLB.com currently has Acuna ranked as the No. 6 prospect in baseball.