The focus of Luis Enrique can now defeat Aston Villa because we know that British representatives are a team that plays more pressing and their style of play is also quite hard that will force PSG a little difficult to compensate. In strength the two teams are also not too different so it is difficult to predict the match because it could be a match for the first leg will end in a draw. But PSG will be far more favored because beating Liverpool is not easy but they do it well and not solely because of Liverpool's declining quality.
In Ligue 1 there are not many challenges that might be received by PSG so that they can focus much more focus on facing Aston Villa and if it successfully defeated Aston Villa in the first leg it will be much easier when visiting Aston Villa's headquarters in the second leg later.
They can press as much as they want, Villa does this method because they believe other teams defenses do not have the ability to pass out of the press easily and counter attack. But they are forgetting one thing, PSG has lighting fast and incredibly talented wings.
Kvara and Dembele are elite level wingers and both of them could just run through defenses easily, which means, if the defense just wants to get rid of the press, they have to only kick the ball to sides as hard as possible, and their wings will figure out a way to get to attacking. So when Villa does this, PSG will be ready and they will not have hard time getting out of that high tempo press, they will make their wingers the point of attack once again.