Here we can "collect" streams to watch our Primavera.

Rai Sport shows often our Primavera Games

To see Rai sport (1 or 2), i use this page

If it not works, you can search for Rai sport Streams on google, there are some others too! You can also use a Italian proxy to watch the official Rai sport stream, but i dont know how to use a italian proxy tbh.(Because the official Stream only works in Italy)