SRK refuses Bigg Boss 4, Channel offered him a larger remuneration than Big B.

Though the fourth season of Bigg Boss is around the corner the host for the show is far from being finalised. After hosting season 3 of Bigg Boss, Amitabh Bachchan will not be able to anchor the show again because the channel does not repeat hosts on this show.

Source: http://www.mumbaimirror.com/article/12/2010072420100724044439900ce9a08f7/SRK-refuses-Bigg-Boss-4.html