I found this post on X really nice, PSG Barcelona and Inter are still in the running on three fronts and only one of them will make the Treble. Inter and Barcelona have done this great achievement before, who do you think will make the Treble this year? Or among the three quarrels the fourth (Arsenal) enjoys?
I vote Inter
Source: @Football_Tweet
Arsenal only need to win last 3 matches in Champions League to make history and who care about their second position in Premier League?
I like all those three coaches, but I think I like Inzaghi the most. He is a great guy, he looks so thin and small and sometimes shy, but he can explode like a bomb! 
It is funny to watch him and I think he understands his job very well. Communicates a lot and reaches the players and has their respect.
Luis Enrique is a great guy, but when he was successful with Barcelona, I think it is hard to measure how much he himself contributed. The team was so loaded with world class players that it is hard to do a lot of things wrong as a coach. But winning the Champions League with PSG would be a big deal and even more so if it ends with the Treble.
Hansi Flick has done it with Bayern Munich I think and therefore has proven it before. But doing it with different teams would be a next level achievement. I don't think any other coach has done it? I don't know, perhaps Guardiola did.
Hansi Flick and Luis Enrique already won UEFA Champions League titles with their clubs as head coaches, with Barcelona and Bayern Munich. Only Simeone Inzaghi did not win any UEFA Champions League title, and he only had one failed final match with Inter Milan two seasons ago. In this season, Simeone Inzaghi and Inter Milan are coming closely to the final match and they certainly will fight with their best for winning this title. It is funny to watch him and I think he understands his job very well. Communicates a lot and reaches the players and has their respect. Luis Enrique is a great guy, but when he was successful with Barcelona, I think it is hard to measure how much he himself contributed. The team was so loaded with world class players that it is hard to do a lot of things wrong as a coach. But winning the Champions League with PSG would be a big deal and even more so if it ends with the Treble.
Hansi Flick has done it with Bayern Munich I think and therefore has proven it before. But doing it with different teams would be a next level achievement. I don't think any other coach has done it? I don't know, perhaps Guardiola did.