The main goal of the NBA amidst a forthcoming return to finish out the 2019-20 regular season is to keep its players, coaches and staff safe. As such, the league wants to limit the number of people who travel to Orlando as the possibility of a coronavirus (COVID-19) breakout would be lessened as there are fewer people around.
However, it has raised some concern amongst teams and players as the possibility of someone contracting the virus, or sustaining a serious injury, would require players to replace them. The easiest way for many teams to do that would be to allow their two-way players to be with the team as well, which is why many teams are pushing for expanded rosters in this return.