It's an odd situation. He has to make a decision to leave college to go to a job and potentially make an incredible amount of money for an organization which has closed its doors for now and currently has no revenue. While the players are currently being paid, there is a "Force Majeure" clause within the collective bargaining agreement which was put in place for an event like war or a pandemic. If declared the owners would be entitled to get money back and players would not be paid at all for the games that are not being played. I would guess the clause gets used shortly and would mean that nobody is getting paid or players are put on a basic living allowance similar to MLB of $1100 per week during the shutdown.
In addition the NBA may not have a viable business model for the foreseeable future. While all this may be over in a few months - flattening the curve, a resurgence of the virus next winter, or leaders being overly cautious and prohibiting large gatherings may extend the pandemic for a long time - potentially years. None of this takes into account a large portion of the population not making much money right now and how long it will take for discretionary spending to pick back up. On the other hand, if Oturu stays in college he still may not play basketball. He would likely just be sitting in his parents basement doing online classes...
Probably still makes sense for him to roll the dice on getting drafted and this whole thing blowing over in a few months and people filling stadiums again. (unless he someday actually needs a degree)