"He is very keen to have a special appearance from the two. While Shah Rukh has agreed, Salman is yet to give his consent," a source told BollywoodLife.
VIDEO: Logo Of Aamir Khan's 'Laal Singh Chaddha' Revealed; Film Set For Christmas 2020 Release
Aamir is playing the role of a Punjabi for which he has undergone a physical change.
Written by Atul Kulkarni, the film is helmed by "Secret Superstar" director Advait Chandan and will be produced by Viacom18 Studios and Aamir Khan Productions. The movie is slated to release during Christmas 2020. The film also stars Kareena Kapoor Khan.