Musician Paul McCartney is ready to return to work after his hospitalisation last month, according to his former bandmate Ringo Starr.

The Beatles star axed his Asian tour in May after he was admitted to a medical facility in Japan with a virus.

He was photographed looking well while celebrating his 72nd birthday in London last week and on Sunday, he was spotted relaxing on the Spanish island of Ibiza with his wife Nancy Shevell.

According to Starr, McCartney is bouncing back to full fitness and is ready to get back on stage and continue his world tour, reports contactmusic.com.

The drummer tells Britain's Daily Mirror newspaper: "I spoke to him while he was in hospital. He said he was doing Ok. Now he is getting fit and getting ready to rock."

McCartney is due to resume his Out There world tour July 5 in New York.