Oldman, who just celebrated his 48th birthday, is excited to return to his role.
"Gary Oldman is now set to play Sirius Black in the Order of the Phoenix. A deal was concluded this morning," his long-time manager, Doug Urbanski, said.
"I’m so relieved and happy," he added. "I can’t put my mind in the place of the producers, but I would’ve thought that when they read the book, a call to us would’ve been very high on their list. Obviously, the character of Sirius Black is key."
"It’s a wonderful role," Urbanski continued. "Gary read the script last night, and he read part of it to me on the phone this morning. The end of the story is: Gary’s in it. It’s a terrific script, and he’s so happy to be back."