It seems that with the new law active from tomorrow no games can be played in Italy (still need confirmation but is very plausible).
So the game
Juve-Lyon
and for Europa League
Roma Siviglia
Inter Getafe
It cannot be played in Italy.
Keep in mind this is not official but probable.
I do not think anyone will risk going to Italy from now on (except its citizens obviously) and the government will not be able to take any responsibility either of what can happen.
+ playing without spectators is a huge loss so...