Matt Damon is under a "huge amount of pressure" to make another 'Bourne Identity' sequel.
The actor – who has already starred as amnesiac CIA assassin Jason Bourne in three movies – claims film studio Universal Pictures constantly begs him to reprise his role in the blockbusting series.
He revealed: "Even if we made a horrible movie, it would make money, and the studio knows that. There's a huge amount of pressure. But it's not like somebody's hammering at our door. It's just that they would love to make another Bourne movie, and I understand why.
"It's so hard to have a sure thing in Hollywood, and this is as close as you get. So, from an executive's standpoint, I get it."
Matt is also keen to add another film to the series, but only if the storyline is right.
He explained to Empire.com: "Our job, on the creative side, is to make sure that we create something that's of a standard. And this one's really tricky: you can't see the guy saying 'I don't remember' any more, because he's lost and regained his memory three times already!
"And he's not like Bond, who goes on individual missions. I mean, you could make Bond movies forever, because you'd start each film at the beginning of a new mission. But Bourne isn't built that way, unfortunately.
"It's a tricky one, trying to figure out a way, organically, to have a fourth story. But we want to do it."