The 25-year-old's absence reportedly isn't COVID-19 related. He's expected to return this weekend and should be available for the Heat's first playoff game, according to Ethan J. Skolnick of the Five Reasons Sports Network.
Nunn was a late-season signing in 2019, and he earned a spot in the club's starting five after a strong summer league and training camp. He ranks fourth in team scoring at 15.2 points per contest and is shooting 35.6% from distance.
Miami is already missing a pair of key contributors due to injury. Star forward Jimmy Butler will miss his third consecutive game on Saturday when the Heat play the Phoenix Suns, while guard Goran Dragic is questionable.
The Heat are 43-26 and sit one game up on the Indiana Pacers for the Eastern Conference's No. 4 seed.