Bono's Back Surgery May Force Replacement Act for U2

While Bono recovers from his emergency spinal surgery, U2 may have to give up their headlining spot at the Glastonbury Festival in London on June 25. The event's organizer says that Coldplay and Dizzee Rascal are in the running.

On the U2 website, the rockers have already said they'd be postponing their opening concert date on June 3 in Salt Lake City.

The U2 frontman reportedly injured his back while rehearsing for the band's U2 360 world tour and is now recovering at a hospital in Munich, Germany. According to sources, the band is going to announce later this week they're pulling out of Glastonbury.

U2's sold out concert dates in Anaheim, CA for June 6 and 7 are still a go ... for now.