Football superstar Lionel Messi, formerly of Barcelona, is unveiled to the hundreds of Paris Saint-Germain fans who turn out to greet him on a warm summer's day at the Parc des Princes. Fans, many of whom had gathered in the early hours, remained enthusiastic although tempers flared when dozens of the club's infamous 'ultras' marched to the front of the stadium where the fans and media had assembled. (COMPLETE VIDI9KY6AT_EN, VIDI9KY49T_EN) IMAGES