The Ra.One actor has only one existing project in the pipeline once Don 2 releases, Hindustan Times reports.
"Apart from Yashji's (director Yash Chopra) film, I'm not working on anything else right now," said Khan.
The actor has meetings lined up with established filmmakers Vishal Bhardwaj and Rohit Shetty.
"I will meet Vishal soon. For Rohit's film, I've heard half the script. I'll listen to the other half soon," he explained. "Nothing's been finalised, although I've been reading everywhere that even the casting for the film has been done, so that's strange."
Following a period in the '90s of working on multiple projects simultaneously, in recent years Khan has typically focused on one production at a time.
The star made a special appearance in the June release Always Kabhi Kabhi.
Khan will be seen with a new image in new movie Don 2.