Mbappe is a young fantastic player, and I think any club that owns him will be very proud of him. They won't be happy to see a young great player leave their team, either, because it's really uncommon to find a young player with his level of skill on the market right now. I think PSG understands the worth of mbappe in the team, which is why they treated him with such respect. I might even argue he deserves it because he has been giving it his all for PSG, which has greatly aided the club's success.
Regardless of market value, Mbappe is unquestionably the best player on the planet right now in terms of performance, and every organisation would want to have him on their roster. A tremendously talented player who is capable of scoring in every game, Mbappe reminds me of a young Cristiano Ronaldo in his heyday. He is the kind of player who has the power to decide a game on his own. He received superb treatment from PSG and performed admirably for the group. The team must respect his decision to leave as a result. But it only makes sense for them to make a sizable profit from his deal while he is still young, considering the size of their investment in him.
Arsenal really shouldn't be underestimated next season, especially in the Champions League because Arsenal themselves are also very aware that they still have to improve on existing deficiencies to be able to wade through an even greater next season. And not only in the Champions League, Arsenal must be taken into account, but also in the Premier League must also be considered from the start of the season, because Arsenal will try to be consistent from the start of the season to fight for the title next season.
Arsenal can correct their mistakes from last season, but I believe it would be challenging and could take some time given the team's recent addition of two new players and adjustments to the midfield. The midfield was incredibly well-coordinated and had excellent communication skills last season, which I think takes some time to develop. As a result, I don't think the midfield's communication will be at the same level as it was last season. Instead, they will need to start from scratch if they want to compete in the Premier League next season. I think they can perform even better the next season if they can contend for it like they did last year.
Since the champions league is quite demanding and this is their first appearance in a while, they truly needed to strengthen the squad in order to compete because otherwise they would have lost their chance to win the champions league for the first time ever.