"Let me move back into the house or I am going to file for divorce", Lamar allegedly said, according to HollywoodLife.
The basketball player was spotted driving into the gated community where the couple live, and is thought to have moved back into their multi-million dollar mansion after Khloé reportedly kicked him out.
"Lamar is back at home with Khloé as of Monday," the insider added. "Khloé slept at her mum's last night, but returned to her house this afternoon."
It seems the reality TV star is determined to work through the couple's marital difficulties, and has not contacted a divorce attorney.
Khloé has been slamming reports that she and Lamar are headed for a divorce, after she was spotted without her wedding ring and claims that her husband had disappeared for more than 72 hours.
"Really hard to sit here and listen to people talk s--- about my family… I'm too protective for this s---!" tweeted Khloé at the peak of the speculation.
"Lamar was never missing," a source close to the couple told E! News. "He has been with Khloé. Right now the family is focused on getting Lamar better."
At the weekend, unnamed sources told TMZ that Lamar has been using "hardcore recreational drugs" for the past two years, and went to rehab last August.
The report claimed that the athlete had stayed clean for the duration of the basketball season, but started using drugs again once his run with the Los Angeles Clippers ended.
A source close to the couple told People that Khloé had been struggling to help her husband. "It's a really hard time for Khloé. She's kept this a secret for almost two years trying to save Lamar and their marriage."