Sorin was expected to join Lazio this summer but the Roman club have failed to pay the first instalment of his transfer fee to Cruzeiro of Belo Horizonte, who have held on to his registration.
His agent Gustavo Mascardi will meet Cruzeiro and Lazio officials in Rome at the end of the week in an effort to solve the problem. Sources in Argentina suggest that Lazio will then offer Sorin to Manchester United, writing off some of the money they owe for Jaap Stam, who moved to Lazio last September.