Insua appears surplus to requirements at Anfield following the arrival of Roy Hodgson and a deal to Fiorentina is looking increasingly likely for a fee reported to be £5million.
Corvino told calciomercato.com: "There is a negotiation for Insua, we've been talking (with Liverpool) for a few weeks.
"We are interested in player, we'll see how it will end."
Insua's agent Solomon, meanwhile, refused to add any fuel to the fire.
He told Violanews.com: "Yes, I'm one of Insua's agents, I take care of managing the various negotiations.
"Fiorentina? I don't want to comment, but I cannot confirm or deny I'm not in Florence."