Rodrigo was Barca's top target for the January market as they sought cover for knee injury victim Luis Suarez, but ultimately a deal couldn't be struck.
Murthy has since revisited the saga and revealed to Batzine, "I have received many calls for our players. There are many offers on the market. In the end, if the offer is very good, you must accept it because as a responsible club, you must sell before buying. You have to control your accounts.
"For Rodrigo, it's normal, before there was Atlético and now it's Barça. In the case of Rodrigo, Valencia did not receive an appropriate offer corresponding to the high quality of the player. Everyone on the market knows what Valencia was asking for. And if you can offer real money, that's fine. If you cannot guarantee a payment method, then we cannot go all the way.
"We will not accept offers that are not guaranteed by money, as this also destabilises the player."