Paul Bettany thinks Jason Statham should hire an acting double.

The 44-year-old star - who appeared in 'Avengers: Age of Ultron' earlier this year - has hit back at the British action hero, following his criticism of Marvel movies.

Defending his stunt work, Paul told 'Conan': ''I try and do as many of the stunts as I can, myself, but there are times when it's too dangerous or too tricky.

''Potentially [Statham] should think about investing in an acting double, you know what I'm saying.

''If there's a really tricky scene with some very tricky dialogue, one might consider bringing in an acting double for Jason Statham.''

Paul's remarks came in response to Jason's scathing criticism of Marvel movies and in particular, the studio's contrived approach to action scenes.

The 'Furious 7' actor previously said: ''I could take my grandma and put her in a cape, and they'll put her on a green screen and they'll have stunt doubles come in and do all the action.

''Anybody can do it. They're relying on stunt doubles, and green screen, and $200 million budgets, it's all CGI created. To me, it's not authentic.''