That's the rumor going around celebrity news circles, but if one of the CBS show's stars has his way, it's not gonna be happening anytime soon.
Neil Patrick Harris says he doesn't want Britney Spears back on How I Met Your Mother - nothing personal, he says, but he simply doesn't think they need to have recovering celebrity train wrecks show up for cheap ratings boosts.
"I'm in the minority that our show does not need stunt casting in order to succeed," Harris said in an interview with TV Guide.
Neil Patrick Harris: Not hoping for a second Britney Spears cameo.
There were rumors that Britney might make another appearance on the show after her first one, which was generally considered a success by her low standards.
Seriously, though, she's been receiving treatment for her mental problems and any sort of work that she showed up for and didn't melt down during is solid.
Producers have reportedly been receptive to the idea of Britney's return, as has the singer's dad, Jamie Spears, who is open to her working in TV more.
She's also got an offer from 30 Rock, so stay tuned!