That’s according to Bleacher Report’s Ric Bucher, who reports he was told Durant’s injury would keep him out of action for between three and six weeks.
The NBA Finals get underway on Thursday night with Durant ruled out of playing in Game 1.
It also marks three weeks since the 30-year-old suffered his calf strain in Game 5 against the Houston Rockets.
The Warriors have since won every game without Durant being available, with Steph Curry stepping up to the limelight.
Durant will travel with the team to Toronto for the first two games of the NBA Finals, leading to some suggesting he could soon be fit to return.
But Bucher doesn’t believe the two-time Finals MVP will be fit enough to play any part.
“I do not expect to see him play in this series,” he said on The Herd.
“When this originally happened I was told that it was going to be three-to-six weeks.
“Then the Warriors came out and said it was more serious than we originally thought.
“That leads me to believe it’s closer to the six weeks than it is the three weeks.
“Three weeks is tomorrow from the date of the injury.
“So now we’re talking another two weeks, the series is going to be over.
“Game 6 is in two weeks from Thursday so I just don’t see a way in which he’s going to be able to get back and play.”
DeMarcus Cousins has been upgraded to questionable for Game 1, suggesting he could be more likely to return than Durant.
However, Bucher thinks the Warriors will have to cope without both All-Stars.
“I would say the same about DeMarcus Cousins,” he adds.
“I don’t think either one of those guys is going to play in this series.”
Colin Cowherd then makes the assumption that means the Warriors will be playing small-ball throughout the NBA Finals.
And Bucher adds: “Which I believe is going to make the series more interesting than people [think].
“I’m saying the Warriors in six but I would love seven and I think it’s going to be – I’m hoping – I believe it can be a competitive six games.”