The NHL continues to explore all options for resuming the season while waiting for clearance from authorities, after pausing the season March 12 because of concerns about the coronavirus pandemic.
"When we'll have an opportunity to return depends on things that we have absolutely no control over, because it all starts with everybody's health and well-being," NHL Commissioner Gary Bettman told CNN on Monday.
"And until there's a sense that people can get together, not just to fill our arenas but even our players to get together to work out, we don't know when we can come back.
"But it's something we're monitoring on a daily basis."
The NHL has asked players to self-quarantine through Wednesday, though Deputy Commissioner Bill Daly said Friday he would be surprised if that timeline were not extended.
Commissioner Bettman told CNN the NHL and the NHL Players' Association had discussed how long players would need to prepare for the resumption of the season.