However, the studio has not completely ruled out others in the running, says the trade. Peyton Reed (Bring It On, Yes Man) and the duo behind Half Nelson, Ryan Fleck and Anna Boden are still in the mix, in case Gunn doesn't commit to the project.
According to THR, Marvel is said to like Gunn's sensibility and his ability to mix comedy elements with action and horror, a quality he shares with The Avengers director Joss Whedon, who is now a major contributor to the company's expanding universe.
It was reported earlier this month that Black List scribe Chris McCoy was at work on a script rewrite of Nicole Perlman's previous draft.
Marvel declined to comment on whether Gunn was in negotiations to take the reigns of the Guardians adaptation, so we will have to wait for an official announcement before knowing who ends up in the directors chair.
Source: The Hollywood Reporter