Udinese chief Cristiano Giaretta has confirmed the growing transfer interest in Allan.
The Brazilian attacker could be on the move this summer.
"Allan? In addition to Inter Milan, he's liked by Fiorentina, another Italian team and a Russian club," revealed Ciaretta.
The 24 year-old has also been linked with Watford, following their promotion to the Premier League.
Both Udinese and Watford are run by the same owners.