Giovani dos Santos' agent Vicente Montes has claimed the Mexico international is being 'held hostage' by Tottenham.
The 23-year-old forward has never been able to make an impact at White Hart Lane following his £4.7million arrival from Barcelona in 2008.
Dos Santos has spent spells out on loan with Ipswich, Galatasaray and Racing Santander and is keen to leave the North London club on a permanent deal.
Montes claims his client is wanted by a number of clubs in Spain and Italy, but feels the tough negotiating stance taken by Spurs chairman Daniel Levy is putting off potential suitors.
"As yet, no concrete offer has arrived. Giovani still has one year left on his contract with Tottenham and the market is currently in a very difficult time," he told calciomercato.it.
"The Spurs chairman is a tough obstacle to overcome, as confirmed by the (Luka) Modric deal.
"Dos Santos is held hostage by Tottenham, but at the end of his contract he'll have the opportunity to agree a deal with another club."
Montes believes that Dos Santos would be happy to move to either Serie A or La Liga, and suggested that a host of clubs were keen to secure his services.
He added: "Several teams have shown an interest in the past, such as AC and Inter Milan, Fiorentina, Genoa and AS Roma.
"Atletico Madrid? Yes, but there are also other interested clubs in Spain, including Sevilla, Espanyol, Granada and Malaga, who asked for information on the player.
"Serie A and La Liga are of great interest to Dos Santos."