Below is Euroleague's schedule for 25 Jan. This is in Gr time, so it is Boston time +7. Therefore, Daru plays at 13.30 ET, Real at 14.00 ET and Armani Milan at 14.45 ET. Which means most ppl will be at work...
As I already mentioned in the Zizic thread, you can find streams here
As a rule of thumb, Euroleague's streams are much better quality than the NBA ones. There's little difference from watching TV.
Regarding NBA prospects playing in these games:
Zizic obviously, Aleksej Nikolic (Bamberg, PG, 21 yo), Leon Kratzer (Bamberg, Center, 19 yo), Doncic (Real, SG, 17 yo), Simone Fontecchio (Armani Milan, 21 yo, SF), Vassilis Toliopoulos (Oly, PG, 20 yo), Ioannis Papapetrou (Oly, SF, 22 yo), Dimitris Agravanis (Oly, PF, 22 yo).
Zizic and Doncic apart, the two other good prospects are probably the two Bamberg players.
For the rest, the chances are that they will stay in Europe.