The director of the Monte Carlo Masters 1000 said on Sunday there are "no concrete plans" to start a women's event but admitted it could happen in the future.
The Monte Carlo tournament, which dates back to 1896, is just one of two Masters 1000 tournaments, alongside the Paris Masters in the autumn, not running a women's competition.
"I wouldn't rule out anything in the future," David Massey told reporters.
"We obviously remain open to the idea of welcoming the WTA to our tournament.
"There's no pressure (from the WTA), nor are we saying that we'll never do that either. It's just not an action item at this point."
Massey said an expansion of the current set-up would "require us to have more days for the event," which currently runs only for one week.
Of the nine Masters 100 tournaments - the most important events after the four Grand Slams - the seven that include women run for 12 days.
"The best product, I believe, would be a combined event and not back-to-back," he said.
"So we're really looking at, if it does happen in the future, it will be combined."