Former Big Brother housemate Billi Bhatti has offered to return to the Big Brother house at the end of this series – for free.

The model – who appeared on the series in 2007 – has told producers he is willing to waive the £10,000 fee being offered to former housemates to return for the Ultimate Big Brother contest.

The special two-week series, which begins on August 24, will see past contestants from both the regular and Celebrity shows return to the house to compete for the title of Ultimate Housemate.

“Producers want BB to go out with a bang,” an insider told The Sun.

“The special series will last just over a fortnight – and so many past housemates are so keen that some have offered their services for free!”

Former series champions Nadia Almada and Craig Phillips are among those tipped to take part, as well as some of the more notorious housemates including Nikki Grahame and Nick Bateman.

Billi joined the Big Brother house during the 2007 series of the show as one of the later housemates.

However his time in the house was short-lived and he was evicted in the fifth week of the show.