The band are due to perform on the venue's main Pyramid Stage, and are rumoured to have lined up the Lord of the Rings actor to join them for a performance of a track called 'Invisible Light' from their new album, which features his vocals.
Ana Matronic told The Sun: "I would die to have him up there. I met him at Live Aid. He was backstage hanging out, so I think he's a good time Charlie. He could get into it."
Two months ago the group posted the track on their official website to give fans an exclusive preview of their third studio album, Night Work.
The full album has since leaked on to the internet, to the delight of the band, who are pleased at the positive response it received.