I think Man U will beat Roma today... The statistics of their meetings completely for the Red Devils! 
They look stronger than Roma too!
And in the match between Villareal and Arsenal everything is not clear... I think the Spanish club can win today!
When we see in team statistics it would be a winning day for United. but we don't know yet the starting lineup for this match. I think Ole will make some changes with their squad tonight. But I'm pretty sure Cavani will be on starting lineup for today match against Roma They look stronger than Roma too!And in the match between Villareal and Arsenal everything is not clear... I think the Spanish club can win today!
So Manchester will be looking to secure an advantage before their trip to Stadio Olimpico.
as for Villareal vs Arsenal - the gunners have seen success in the Europa League without Aubamayang or Lacazette leading the attack, they will certainly have a hard time continuing this hot streak.as for Villareal boss Emery is very fimiliar with the competetion and he is also the former Arsenal boss is definitely dreaming of ousting his former employers from the tournament,so believe we are going to see both teams scoring.