The France international's contract at Camp Nou is due to expire at the end of June, and Barcelona are struggling to come to an agreement with the attacker over an extension.
The 24-year-old is currently free to hold talks with foreign clubs over a potential move this summer, and Manchester United continue to be strongly linked with his services.
Liverpool, Newcastle United and Chelsea have also previously been credited with an interest in the World Cup winner, who has scored once and provided two assists in 11 appearances at club level this season.
The Frenchman played the full 120 minutes of Barcelona's 3-2 defeat to Real Madrid in the semi-finals of the Spanish Super Cup on Wednesday night. body check tags ::