WITH his longtime gig as host of “American Idol” set to end after the singing competition’s upcoming 15th and final season, Ryan Seacrest has lined up another Fox reality show.

    Later this summer, he will begin hosting “Knock Knock Live,” a wish-fulfillment series from Seacrest and previous collaborators Dick Clark Productions and Simon Fuller’s XIX Entertainment.

    Seacrest will be based in a Los Angeles studio while the “Knock Knock” team criss-crosses the country, surprising unsuspecting people at their front doors with life-altering opportunities, including major cash prizes or a chance to meet their favorite celebrities.

    The idea goes something like this: Someone knocks on your door and offers you thousands of dollars for naming nine kids who live on your block or your favorite pro basketball player knocks on your door and challenges you to a game of H-O-R-S-E for a chance to win courtside seats.

    Similarly key, the deal features limited exclusivity for Seacrest, which will enable the multi-hyphenate to continue working across the media landscape. Among the projects already on his resume: “Idol” on Fox and “Dick Clark’s Rockin’ Eve With Ryan Seacrest” on ABC as well as “On Air With Ryan Seacrest” and a nationally syndicated top 40 radio show.

    His relationship with NBCU is ongoing, too, and includes on-air broadcasting and producing duties across NBC and E! (red carpets). In an interview last year, Seacrest confirmed that he also had been having conversations with NBC Sports about collaborating on the 2016 Olympics coverage in Rio, as he did the London games in 2012.

    (SD-Agencies)