Director Danny Boyle has confirmed he plans to film the long-awaited sequel to "Trainspotting" early next summer in an effort to accommodate the television schedules of returning stars Jonny Lee Miller and Robert Carlyle.

They only get this little window off, so either you wait for the contract to run down, which could be as late as three years, or you kind of try and do it in this window,” he told The Hollywood Reporter. “But all four lads [Ewan McGregor, Miller, Carlyle and Ewen Bremner] are back in.”

Boyle announced early this month that the sequel, based on Irvine Welsh's 2002 "Porno," will be his next project. He's met with Channel 4's Film4 division about returning to produce the follow-up, which is targeted for release late next year -- in time for "Trainspotting's" 20th anniversary.

“We’re doing it for less than $20 million, and that’ll give us control of the film so we can make the film we want to make,” he said. “That’s as much as you can get without being answerable to anybody. You can sort of get on with it without much interference. Although we could have raised a lot more money for this, we didn’t so we’re trying to keep some sense like we kept the original.”

Produced for $2 million, the original grossed $72 million worldwide.