In the Champions League, no opponent should be underestimated by any team, especially when it has entered the knockout stages such as in the quarter-finals. This means that every opponent must be seen more seriously by any team if the team wants to be in the next round and win with enough aggregate goals to be able to qualify for the other round. Aston Villa is a fairly serious opponent and I think PSG also sees Aston Villa as a dangerous opponent because in the Champions League all abilities will always be deployed by any team without any fear, especially if the team no longer has a chance to become champions in its own domestic league.
All the teams in UCL are the big teams from varied top leagues. All the teams must be serious since the early stage of UCL competition. Moreover, when it is already in quarter-final, only the stronger teams can reach this round. Aston Villa is strong team, they come from EPL that is the most competitive league in the world. It is totally a big mistake if PSG underestimates Aston Villa. There is no guarantee that PSG can easily beat Aston Villa although they can beat Liverpool. PSG must be very careful because Aston Villa is much stronger recently, they have a better squad recently. And they are in their best form as well.
Out of the 8 teams that have survived the tournament so far this season we have to consider these eight teams as the strongest teams because if other teams could have performed well this season then other teams could have definitely included their names in these eight teams. Now we have to discuss the eight teams that survived the tournament. Among these 8 teams, which four teams will play the semi-finals and which two teams will play the final among the four teams who will play the semi-finals and which team will be the champion among the two teams who will play in the final, but now we discuss about these. If I have to discuss one team I will always discuss Real Madrid. This is the only team I see most likely to do well in the Champions League this season. Other teams will do well, but Real Madrid has to be put first.