Dembele suffered many injuries while defending Barcelona, it has hampered his career development, and made the management willing to release him to PSG. With PSG in Ligue 1, Dembele managed to rediscover his best performance, he was very lucky to feel the touch of Enrique cool hand. I think, Mbappe departure also provides more space for each player to shine more, Dembele can be more free to carry out his duties without the shadow of bigger star players.
Dembele was bought by Barcelona with more than $100M from Dortmund when he was very young but he has never met expectation of Barcelona. Many seasons he struggled with many injuries and were absent in many matches. Only in a season when Xavi was appointed as a head coach of Barcelona, Dembele started to recover, had better fitness, and also performed better. He continued it one more season for Barcelona but after that he and the club had a conflict so that he left the club and joined PSG.
Dembele was considered by PSG as a replacement of Neymar or Mbappe in their attacking system and so far he has done this task well. In this season, he is a most experienced attacking player in PSG and he has carried this task quite well by contributing a lot and bringing PSG to Champions League final match.
The final match will be a golden opportunity for Dembele to prove his quality, which might lead him to win an individual award as one of the best players today. So far Dembele has scored 33 goals and 13 assists in 48 matches in all competitions, which is the best period in his career. Enrique expects Dembele to be able to offer something special in the final, with kvaratskhelia and Barcola, they will test Inter Milan defense to the limit.
He has proven his ability throughout this season and this final match is a last match for winning a big title. He has nothing to prove more but surely he will try his best for winning this title. No player wants to lose in Champions League final match, including Dembele. He wants to lift this trophy but not to prove his individual ability that does not mean too much if he plays well and PSG lose this match.