Bob Daily told Zap2It that the show still needs to come up with a character to replace Edie (Nicollette Sheridan).
"We haven't really figured out what that person is," he said. "What we're looking for is sort of a provocateur, a muck-raker. We've had a couple of different people filling that role over the years. When Dana Delany joined the Lane [as Katherine Mayfair], her function was partially to stir things up a bit. I think that's really what we're looking for."
Daily explained that the team behind the show has been considering offering a role to Williams, who played Wilhelmina on Ugly Betty.
"We love Vanessa Williams and I know her name has been floated," he said. "If she were available, we would certainly be interested in talking to her."
He continued: "We haven't had a moment to really think about the new characters for next season. I think we're primarily looking for what kind of character we want to add next year. In terms of gender or age or race, we haven't thought that far yet.
"[Williams] has come up, but nothing more at this point. We think she's great, but nothing more than that her name was mentioned in the writers' room."