The Beatles’ manager Brian Epstein following the sacking of the band’s drummer Pete Best is going up for sale at auction.Best was originally signed with the three long-standing members of The Fab Four — John Lennon, Paul McCartney and George Harrison — but he was let go by Epstein and replaced by Ringo Starr in August 1962.A letter written by Epstein to the “secret Beatle” Joe Flannery, who served as The Beatles’ booking manager between 1962 and 1963, has been put up for sale by the latter’s