McCartney Times

A guitarist called “Angelo Mysterioso” is listed for the song I Will Be There, and the name bears close resemblance to “L’Angelo Mysterioso” – the title used by Harrison on Cream track Badge, which he co-wrote with Clapton in 1969.But Clapton tells Guitar World: “It’s not George. The thing is, the person wishes to remain anonymous. So we came to that arrangement and we both thought it was the best idea.“I can’t even tell you that much. I’m sworn to secrecy, and I hope he is too. But I quite liked it.”He adds: “I heard there were rumours about it being George and I thought that was great, because it’s nice that people know that story.

Source: Eric Clapton dispels rumour of George Harrison album appearance – News – Blues