I don't think the show is doing very well. It's gotten pretty bad reviews (31% on Rotten Tomatoes) and there was a lot of backlash after the first episode with people confused and upset that it has everybody in it, and doesn't so much as mention Lecter.
Despite taking place a year after the events of “Silence of the Lambs,” the CBS series will not mention Hannibal Lecter, the cannibalistic serial killer memorably played by Anthony Hopkins in the 1991 film.
The rights to Thomas Harris’ characters are split between MGM and the Dino De Laurentiis Company. “Clarice” showrunner Elizabeth Klaviter explained that CBS only has the rights for characters introduced in Harris’ 1988 novel “Silence of the Lambs.” Unfortunately, since Lecter’s first appearance came in another Harris novel, “Red Dragon,” that makes him off-limits.
Source:
Why CBS' 'Clarice' Can't Mention Hannibal Lecter By Name
Then you have to wonder if Universal would be afraid to get the rights after the Scream debacle where they said universal had to do the TV version and not the movie...and I believe something similar happened with From Dusk Till Dawn, but it didn't result in the house being scrapped as they were so similar and it wasn't sprung on them at the last minute. I'd be afraid of an IP that has a "different" TV show active.