Eric Clapton will reportedly make a guest appearance on the next Rolling Stones album.

Unnamed source is saying Clapton bumped into the band because the two acts happened to be recording in the same London studio and they ended up tracking a pair of songs under the guidance of producer Don Was.

"Eric was in the next studio along so he came in to say hello," said the source.

"They ended up jamming and recorded two songs. Don reckons it's the best thing he has ever done with the Stones."

The source also says that the Stones have enjoyed getting back to work so much that they're already making plans for their next album, which they intend to start recording right away.

"They have decided to go back in the studio later this month because they are enjoying it so much."