NBA all-player call set for Friday, sources say

What will the quality of play be like if the NBA returns? (1:24)

Adrian Wojnarowski explains that if the NBA does in fact resume this season, the quality of play is going to feel new to many players around the league. (1:24)

NBA commissioner Adam Silver and National Basketball Players Association executive director Michele Roberts will host a call for all players on Friday, sources told ESPN.

That's the same day the league has permitted teams to reopen practice facilities for voluntary, social-distanced workouts in areas where that has been permitted by local public health officials, in accordance with the detailed safety protocols that the NBA crafted with guidance from public health officials, the CDC and infectious disease specialists.

The call with Silver and Roberts is intended to be an open forum for players to address any concerns or ask questions, sources said.

Three teams -- the Portland Trail Blazers, Denver Nuggets and Cleveland Cavaliers -- have told ESPN they plan to reopen Friday, while several other teams said they hope to open next week. The Houston Rockets had planned to open their facility Friday but reconsidered in collaboration with players and staff as well as Texas Gov. Greg Abbott's directive for gyms not to open until May 18.

The Sacramento Kings announced they would open their practice facility on Monday.

The Kings said the Sacramento County Public Health Order allowed non-contact recreational facilities to open May 1.The Kings said the facility will be available for use by Kings players for workouts and treatment on a voluntary, individual basis only.

Other teams, meanwhile, say they're in no rush to return.

Those include the Los Angeles Lakers and the Dallas Mavericks, whose owner, Mark Cuban, said Wednesday that teams' inability to test asymptomatic players for the virus makes a return to facilities right now not worthwhile.

"Even though we can try and take all different kinds of precautions, it's just not worth it -- particularly when our guys are staying in shape and they're going outside and shooting on outdoor hoops and working out in various ways," Cuban said on The Athletic's "77 Minutes in Heaven" podcast. "So I just don't think the risk is worth the reward."

Teams opening practice facilities for volunteer workouts will be able to designate six assistant coaches or player development personnel to provide supervision of player workouts on the courts, a source told ESPN's Adrian Wojnarowski. Head coaches will not be allowed to participate or observe the player workouts, sources said.

ESPN's Tim MacMahon contributed to this report.