Remodeling plans for MGM Grand Las Vegas have stalled because designs for a 33,000-seat baseball stadium to house the relocated Oakland Athletics across the street are not finalized.

MGM Resorts International CEO Bill Hornbuckle said Tuesday he’s “been shown three versions of [the stadium] in terms of where it will actually sit on the site” that currently houses the Tropicana Las Vegas.

In response to a question during the company’s fourth-quarter earnings conference, Hornbuckle said the lack of clarity has stalled MGM’s plans to remodel the primary entrance to MGM Grand. He said the idea is to provide a connection between the pedestrian entrance to the $1.5 billion Major League Baseball stadium and the 30-year-old resort.

“We’re waiting to see where that lands. I have to believe, in the next 30 to 60 days, we should find out more,” Hornbuckle said.