Six-time Ballon d'Or winner Lionel Messi told Barcelona he wants to leave - on a free transfer - in a <a href="https://www.thenational.ae/sport/football/lionel-messi-hands-in-barcelona-transfer-request-1.1068386">"bombshell"</a> fax on Tuesday that is expected to trigger a legal battle over a buy-out clause worth hundreds of millions of dollars. Signalling the end of an era at Barcelona, where Messi is the record scorer and has won four Champions League titles, the disgruntled Argentine wants to terminate his contract "unilaterally" by triggering a release clause. The news is sure to put any club with the financial clout to put together a tempting package for a player who has scored more than 700 goals for Barca and Argentina on red alert. Above is a picture gallery of potential destinations. To move through the gallery, simply swipe or click on the arrows.