*TMZ is reporting that Whitney Houston’s mother Cissy “is on a mission to eradicate the bad influences from Bobbi Kristina’s life … and she’s starting with a 22-year-old man who Whitney treated like her very own son.”

Houston family sources tell the website that Whitney invited Nick Gordon to live with her and Bobbi Kristina more than 10 years ago after learning Nick’s mother could no longer care for him.

Whitney, according to the sources, treated Nick like her unofficially adopted son up until the end.  But now, Cissy believes Nick “is a bad influence on her granddaughter and wants him out of the Houston family home in Atlanta … ASAP.

“We’re told Cissy has already informed her lawyers about the eviction … in case he puts up a fight.”

TMZ says there are reports that Nick was included in Whitney’s will, but that has  not been confirmed by members of the Houston family.