Can only say that maybe it's a dream that can be pursued. However, this opportunity will be more difficult compared to the EPL. Arsenal must have good preparations for the match vs PSG in order to reach the Final. With the potential to face Barcelona, this small hope must be used as motivation. I think Arsenal will secure the result if they score a goal. Defending as best they can to ensure the 2nd Leg, they still have at least 1 decisive goal to qualify for the Final. Winning the UCL will be the best achievement for Arsenal after a long time not winning both leagues.
If only Arsenal can understand PSG weaknesses and use that as an advantage to outplay them. Arsenal needs to be very careful with their defense so that PSG wouldn't penetrate easily. If PSG cannot score, they'll get frustrated and will have nothing to do than to give up on the match. PSG has been looking for an opportunity to win Arsenal so that they van can be in the finals.
Arsenal has become a successful and strong team in the eyes of everyone, due to which they are ahead of teams like Inter, Chelsea and PSG and their chances of qualifying for the semi-finals are very high. Due to which Arsenal's performance has also become stronger than before and they are playing hard and are succeeding. It is not so easy to weaken PSG, but the way Arsenal is going, PSG can also lose the match and their position is also in danger at the moment. Even if Arsenal cannot weaken them, it will not suffer much. That is why PSG is afraid that Arsenal will defeat them and will reach the final itself and will be successful.