Macaulay Culkin, the 10-year-old star of "Home Alone," will be heard but not seen on Saturday morning television.

Culkin doesn't have the time for a TV show but was willing to do a voice-over for an NBC cartoon series, his agent, Paul Feldsher, said in the April 13 issue of TV Guide.The character whose voice he will provide will resemble Culkin, whose "Home Alone" is the highest-grossing comedy in movie history. The TV series, scheduled for the fall, is about a boy who realizes a different wish for himself each week.

Even if the pint-sized Culkin were willing to star in a series, television probably couldn't afford him. "He's untouchable for television now," said John Matolan, CBS vice president. "Since `Home Alone,' he's gone stratospheric."