Djimon Hounsou is in talks to play a Merlin-type character in Guy Ritchie's Knights Of The Round Table.
The Guardians Of The Galaxy star is tipped to take the role of King Arthur's mentor in the upcoming film, reported Variety.
Idris Elba had been up for the part in Warner Bros and Village Roadshow's movie, but had to forego due to scheduling conflicts.
Charlie Hunnam is to star as King Arthur, with Pirates Of The Caribbean: On Stranger Tides actress Astrid Berges-Frisbey portraying Guinevere. Jude Law is in talks to play the villain.
Plot details for Knights Of The Round Table, written by Joby Harold, are being kept under wraps. The film, which is tipped to be the start of a possible six-instalment franchise, is scheduled for release in 2016.
Djimon, who played Korath the Pursuer in James Gunn's Marvel movie Guardians Of The Galaxy, will next be seen in Fast And Furious 7 and fantasy film Seventh Son.
The 50-year-old Blood Diamond actor is also playing Chief Mbonga in the new Tarzan film and stars in horror thriller The Vatican Tapes alongside Michael Pena and Dougray Scott.