Actor Sir Sean Connery is still deciding whether to appear in the next Indiana Jones film, according to trade magazine Variety.
Sir Sean played Indiana Jones' father Professor Henry Jones
Directors George Lucas and Steven Spielberg are hoping the 76-year-old will feature in the fourth instalment.
Sir Sean, who has not appeared in any films since 2003, has apparently said he would consider returning if he liked the script.
Harrison Ford has already signed up to return as the daring archaeologist.
Sir Sean played Ford's father, Professor Henry Jones, in the 1989 film Indiana Jones and the Last Crusade.
Oscar-winning actress Cate Blanchett has recently been in talks to star opposite Ford, and British actor Ray Winstone has also been approached to appear.
Shooting is due to begin in June with the film expected to open in May 2008.
Lucas (l) and Ford (r) worked on both Indiana Jones and Star Wars
The original Indiana Jones trilogy was a tribute to Saturday morning B-movies, and made more than $1.1bn at the box office in the 1980s.
The first two films were Indiana Jones and the Raiders of the Lost Ark (1981), followed by Indiana Jones and the Temple of Doom (1984).
The fourth instalment has been in development for more than 10 years.
Earlier in the year, Lucas said it would be "a character piece" including some "very interesting mysteries".
The screenplay was written by Jurassic Park and War of The Worlds scribe David Koepp.