Eight teams and seven different clubs have claimed 'the treble' over the years, winning the European Cup, league title and biggest domestic cup in the same campaign:1966/67: Celtic1971/72: Ajax 1987/88: PSV Eindhoven1998/99: Manchester United 2008/09: Barcelona2009/10: Internazionale Milano 2012/13: Bayern München2014/15: Barcelona Which sides are still in the running to join the elite band this season?Barcelona UCLUEFA.com - News