Sources told the New York Post that NBC and Couric are in "preliminary talks" about a temporary position.
Couric, whose daytime talk show, Katie, was canceled in December, was hired as a "global anchor" by Yahoo! last year. Though Yahoo! has a relationship with ABC News, her contract doesn't prevent her from working with other networks.
“The reality is that it is primarily internal discussions," a source told The Wrap. "It's unclear whether Katie will want to do this and be available to guest co-host and whether she would be in NBC's plans."
The source also said that Couric "maintains" a friendship with Today hosts Matt Lauer and Al Roker, which would make her a good substitute for Guthrie.