Rambo: New Blood will focus on the relationship between mercenary Rambo and his son - a character that has not appeared in any of the four Rambo movies.

It was reported the show would be executive produced by the Rocky star and he would will also appear in the series, but Stallone's representatives have cleared up the rumours, saying, "Contrary to reports, Sylvester Stallone has opted not to participate in the planned Rambo television series in any way at all. (He) wishes the others well with the project."

The TV project has been in the works since 2013 and producers hoped Stallone would sign on. The future of the project is now undecided, according to Deadline.com.

Stallone first appeared onscreen as John Rambo in 1982's First Blood.