Inter Milan are eyeing the midfielder.
"It's disrespectful to talk about an auction for a club like Cagliari," Giulini told Tuttomercatoweb.
“On 11 June we reached an agreement with Inter on the upfront fee, which I believe is the most important thing. Only the bonuses needed to be defined.
“We haven't heard from Inter for three weeks now, and I don't know if they're still interested.
“In the meantime, we've reached an agreement with Roma, who have made us an even better offer.
“I believe, at this point, it's only fair that Nicolo is given a few days to make a decision."