Britney Spears' estranged husband Kevin Federline has dismissed reports he is to star alongside Keanu Reeves and Forest Whitaker in a new movie - he is "too busy" to take on the role.

The wannabe rapper/actor was said to have taken on a role in the thriller Night Watch - a move which would have marked his first official foray into the film industry after small appearances in You Got Served and hit U.S. TV show, CSI: Crime Scene Investigation.

But while a representative for movie house Fox Searchlight confirms Federline had auditioned for "a minor role", he says the 29-year-old didn't win the part because of "his availability and our shooting schedule".

Referring directly to the reports, the spokesperson adds, "This is not true. Kevin Federline was not cast."