Udinese chief Cristiano Giaretta admits Allan is attracting major transfer interest.
Allan has been linked with Inter Milan.
"There is no news at the moment," Giaretta said when asked about Inter rumours.
"There's nothing concrete, but in these kind of situations it doesn't take long to reach a deal. At the moment I'd say he's more likely to stay in Udine.
"He'd be happy to stay longer with us, there's no doubt about that.
"Aside from Inter, there's [interest from] Fiorentina, another Italian club and a foreign team, a Russian club.
"If we don't get big offers, then he'll stay in Udine, he'd only leave if we got a very important offer."