Sir Cliff to enter Big Brother house?

Rex Features

Sir Cliff Richard is one of the names being touted to appear in the next series of Celebrity Big Brother.

The reality show returns to Channel 4 in January, with Whitney Houston and ex-Sugababe Mutya Buena among the stars rumoured to be making an appearance.

Bosses are hoping that Richard will open up about his private life on the programme, reports Now.

The 67-year-old has never married, despite relationships with Sue Barker and Olivia Newton John. He has lived with a 53-year-old Catholic priest for the last seven years.

The popstar recently commented that the press "don't frighten me anymore".

"I've got a tour coming up and I don't care if they talk about the things that I do, they can speculate all that they want. It makes no difference to me at all," he said.