“The band are gearing up for a load of live dates but tend to leave big decisions like this until the last minute.
“Michael Eavis is desperate to get the band confirmed and has made initial contact with their people.
“It would be a massive coup to get the band playing Glasto on what could be their last round of live dates.
“Getting a decision from the whole band can be tough and at the moment they are without an agent for live shows, which is not helping the situation.
“But there is a good chance 2013 will finally be the year they make it.”
Those afraid of the Glasto mud can rest easy, though. On Monday the Stones will confirm a string of shows at the 02 Arena in London and in New York.
Another name in line for a Pyramid headline slot is MUMFORD & SONS