LOS ANGELES (Reuters) - The longtime manager for Britney Spears voiced concern about her mental health on Wednesday, saying he believes the pop singer should not return to performing at a planned Las Vegas residency in the near term \u201cand possibly never again.\u201d FILE PHOTO: Singer Britney Spears poses at the 29th Annual GLAAD Media Awards in Beverly Hills, California, U.S., April 12, 2018. REUTERS\/Mario AnzuoniIn January, Spears suspended plans for a new show set to run in Vegas from February to August after her father became seriously ill following a ruptured colon. Last month, she spent time in a mental health facility, saying she needed \u201ca little me time.\u201d Larry Rudolph, in remarks to celebrity website TMZ, Variety and Entertainment Tonight, said the \u201cStronger\u201d singer had not called him in months. But he told TMZ; \u201cAs the person who guides her career - based on the information I and all of the professionals who work with her are being told on a need-to-know basis - from what I have gathered it\u2019s clear to me she should not be going back to do this Vegas residency, not in the near future and possibly never again,\u201d Rudolph told TMZ. \u201cI don\u2019t want her to work again \u2018til she\u2019s ready, physically, mentally and passionately,\u201d Rudolph added. \u201cIf that time never comes again, it will never come again. I have no desire or ability to make her work again.\u201d Other representatives for Spears, 37, did not immediately return a request for comment. Her father, Jamie Spears, is credited with reviving her career after her life spiraled out of control in 2007-08. He remains the court-approved conservator of her business affairs. Spears became a teen pop phenomenon in 1999 with her debut single \u201c...Baby One More Time\u201d and subsequent hits like \u201cOops! ... I Did It Again.\u201d She made a comeback in late 2008 with the album and world tour \u201cCircus\u201d and has performed in Las Vegas since 2014. \u201cLast summer, when she wanted to tour, she called me every day. She was excited,\u201d Rudolph told TMZ. \u201cShe hasn\u2019t called me in months. Crickets. She clearly doesn\u2019t want to perform now.\u201d Reporting by Lisa Richwine; Editing by Cynthia OstermanOur Standards:The Thomson Reuters Trust Principles.