Reigning NBA Finals MVP Giannis Antetokounmpo and new Brooklyn Nets acquisition Ben Simmons will both not play on Monday.

Milwaukee Bucks head coach Mike Budenholzer confirmed that Antetokounmpo will miss Monday's game against the Portland Trail Blazers with a sore ankle.

The Greek forward had been listed as probable before being downgraded to doubtful, ahead of back-to-back games with a Tuesday date with the Indiana Pacers too.

"He's not ready to go tonight," Budenholzer told reporters pre-game. "It's not anything more than that. We'll see how he feels tomorrow. I think it's very short term."

Simmons, who joined the Nets from the Philadelphia 76ers in a blockbuster trade late last week, attended shootaround prior to their game with the Sacramento Kings.

However, the three-time All-Star was ruled out as he "returns to competition reconditioning".