The band will play the huge gig on June 6, 2014
Win Butler's comments spark rumours they'll headline Glastonbury
Singer also drops hint that band will play UK festivals next summer
The band have also announced details of VIP packages for their US stretch
The track features on the Canadian group's latest album 'Reflektor'
Canadian band will also play European festivals in Denmark and Germany
The frontman welcomed concert-goers at The Roundhouse dressed in a skull mask
Band appeared in masks under their The Reflektors pseudonym at London's Roundhouse venue
Canadian band top sales in 100 independent record shops in the UK
Spanish festival will take place between May 29-31 at Parc del Fòrum in Barcelona