Surgery on Hayward's broken left ankle was set for later Wednesday night.
Stevens said the Celtics will begin looking at how best to fill Hayward's vacancy, including a potential roster addition.
The forward's agent, Mark Bartelstein, said this morning that though there is no timetable, expectations for a return this season are unrealistic.
The entire Quicken Loans Arena was filled with a anxious echo when Boston Celtics star Gordon Hayward suffered a gruesome injury that resulted to a dislocated ankle and a fractured tibia in their opener against the Cleveland Cavaliers. The surgery was performed by Drs.
Regardless of when Hayward returns to the court, the Celtics are expecting a full recovery.
Before Boston's home opener against the Bucks Wednesday, the Celtics played a video of Hayward after introducing him with the starting lineup.
"I think so", said Bartelstein. "I'll be supporting you guys from here".
But the news that the injury is season-ending really, really sucks (even if it's hardly surprising after how very bad the injury looked).
"We'll see how that works itself out".
Hayward, who was a free agent, signed a four-year, $128 million contract with the Celtics on July 1. Hayward joined an unfortunate collection of athletes including Shaun Livingston, Paul Goerge, and Kevin Ware, among others, where the injury is so disturbing, so upsetting, they put you at a loss for words. Hayward had two points and a rebound at the time of his injury. "This is a setback, but there's going to be a full recovery".