The 47-year-old actor's twin sons Bob and Max with ex-wife Brooke Mueller were removed from the custody of their mother by child protective services after drug use charges, reported Radar online.
Mueller is currently enrolled in rehab for the 20th time at the Betty Ford Centre.
Since then, Richards has temporary guardianship of the boys.
"It would be in the boys best interest to remain with Denise Richards, permanently, according to Charlie. He will tell the judge he wants the boys to stay in Denise's home, for good. His reason is a very simple one Brooke's drug addiction precludes her from taking care of the boys," a source said.
A crucial court hearing in the matter will take place in the next few weeks. Sheen and Richards will both attend the proceedings.
It is known that Richards loves the boys and wants them to stay with their sisters Sam and Lola.
"Richards has told Sheen she would absolutely love to keep the boys permanently. She wants what is best for them, and Denise loves taking care of them. Bob and Max love living with their sisters, Sam, and Lola, and with Denise's adopted daughter, Eloise," the source added.
