Sources close to the 41-year-old actress told TMZ that Blair believes she was made a target by Sheen after repeatedly criticizing him for being a slacker in front of crew members. The mother of one allegedly complained several times about having to sit around waiting for Sheen to learn his lines in his trailer.
The sources claim the "Cruel Intentions" star is looking to get the $1.2 million she would have made had she not been taken off the show. Blair reportedly plans to sue Sheen if her demands are not met.
News of the alleged lawsuit come a day after Sheen told Jay Leno that Blair was written out -- not fired -- from "Anger Management."
"One of our primary characters, Selma Blair, who played Kate, was written out because it was not about our relationship, and the problem was too many people were still excited about the 'Two and a Half [Men]' character and thinking the 'Anger Management' character was a little dull," Sheen explained in a stop by "The Tonight Show". "So that is not the case anymore."