ESPN's Brian Windhorst reported on The Jump that "it's the big agencies that have a chance" to sign Williamson, including Roc Nation, CAA and Klutch Sports.
Because Williamson hasn't signed with an agent more than one month after declaring for the draft, there's been speculation he could return to Duke if he doesn't like the New Orleans Pelicans.
"He does have some options. I'm not saying he's going to pick these options, but he has not signed with an agent, and he has not signed a shoe deal yet," Windhorst added. "He could threaten to go back to Duke."
Lee Anderson, Williamson's stepfather, shot down that theory Thursday.
"As far as returning to Duke, that's not something we've even considered," Anderson told ESPN Radio's Jordy Culotta and T-Bob Hebert. "We met with [executive vice president of basketball operations] David Griffin and had a great conversation and are excited at the prospect of getting settled and finding a place to stay."
Williamson is the most hyped draft prospect since at least 2012, when Anthony Davis went No. 1 overall to the Pelicans. Williamson is expected to sign one of the most lucrative sneaker deals in NBA history.