Stars sign confidentiality agreements for Stallone's show
Mel Gibson, William Shatner and James Caan are among a host of stars who have had to sign confidentiality agreements after viewing tapings of Sylvester Stallone's new boxing reality show.
The Contender, in which 16 fighters compete for a $1m (€825,700) prize with mentoring from Stallone and boxing legend Sugar Ray Leonard, is due to debut in November.
