Jon Hamm is reportedly ''desperate'' to takeover from Ben Affleck as Batman in the DC Extended Universe.

The pair previously starred alongside each other in 2010's 'The Town' and are believed to have remained friends ever since, but a source says that won't stop the 'Baby Driver' actor audition for the part should Affleck step down from the role as The Caped Crusader.

An insider told Radar Online: ''This is business for Jon - not personal.

''(Ben and Jon) enjoyed working together and have been on good terms since.

''But Jon knows Ben faced some criticism over 'Batman v Superman' and 'Justice League', and frankly thinks he'd be better suited for the job ... Of course, Ben's not officially out of the role yet, but the writing's on the wall, and Jon's desperate for the gig - friend or not.''

Yesterday (08.12.17), Affleck admitted he doesn't know if he will continue playing the superhero.

The 45-year-old actor has starred as Batman in two films so far, 'Batman v Superman: Dawn of Justice' and the upcoming 'Justice League' and also cameoed in both 'Suicide Squad' and 'Wonder Woman', but is non-the-wiser what the future holds for his character.

He said: ''I don't know about that. We'll see what the future holds.''

Affleck will be seen once again as Batman alongside Gal Gadot (Wonder Woman), Jason Momoa (Aquaman), Ezra Miller (The Flash), Ray Fisher (Cyborg) and Henry Cavill (Superman) in ensemble superhero movie 'Justice League' which hits cinemas this month.

Affleck is also due to be Bruce Wayne and his heroic alter ego in 'Justice League 2' and the standalone Batman movie planned by Warner Bros. Pictures, which is being directed by Matt Reeves from a script co-written by Affleck.

Recently, Miller admitted he would love to see Jeffrey Dean Morgan be Batman in 'Flashpoint'.

The 25-year-old actor is set to get his own standalone film as the speedy superhero, which if it follows the comic storyline of the same name, will explore an alternate universe for the famous characters.

'Flashpoint' involves Barry Allen aka The Flash travelling back in time and saving his mother's life, creating a radical new reality where the Justice League never formed.

With the new reality, heroes and villains have swapped places, while characters like Aquaman and Wonder Woman have become competing warlords and Batman's father Thomas Wayne takes on a very different version of The Dark Knight.