Arsenal first match in this competition and they will fight against PSV and this is very interesting because both teams have been met last year on Europa league and both teams have defeated each other which mean PSV can be considers as tough opponent for Arsenal especially PSV performance were increase rapidly because since July PSV has fantastic achievement and since that month PSV has through 11 matches with unbeatable status in all competitions and before they advances to the group stage PSV has been done a good job because they can able to eliminate Rangers with total aggregate 7-2 so although Arsenal is the favourite in this match but PSV cannot be underestimate because they have a potention to make Arsenal get in trouble
The match between Arsenal and PSV will be a tough one indeed because PSV has improved in football over the years and they have been improving. In the other hand Arsenal has improved so much that they can be able to beat any football team in the world on their normal day. Arsenal has improved so so much and even in the English Premier league they have all it takes to win the English Premier especially as they have improved their squad depth.
Maybe PSV is strong in the Netherlands and they are racing for first place in that country but still, the Netherlands is not the same as the Champions League and we all know that compared to many other teams in the Champions League PSV didn't spend and invest a lot for hiring player, in fact, as far as I know, PSV is very known for their good football school to grow younger players, other than that they can't race with a team like Arsenal.