and this could happen to PSG because I don't doubt PSG's finances which might be able to make an offer to Haaland worth 100 million dollars will definitely make the player think deeper and possibly accept the offer from PSG.
Regarding Mbappe's departure, I am ready to see him go because he has provided many good achievements for PSG and it is time for Mbappe to look for another challenge with a bigger club to get the title he wants.
But if it was PSG I think Haaland would think about signing with them. You have mentioned yourself that Mbappe chose to leave PSG because he wanted to look for another challenge. Actually I don't think there is a difficult challenge at PSG for players like Mbappe or Haaland. If Haaland plays for PSG then he will do what Mbappe did where Haaland will win several Ligue 1 trophies and it will be difficult to compete in the Champions League.
The fact that Kylian Mbappe wants to leave Paris Saint Germaine doesn't mean that Manchester City's most priced asset Erling Haaland would also want to leave the English, European and world champions to go and join Paris Saint Germaine. Haaland is in a club where he's getting everything a top footballer would want to get ajd if he's ro leave Manchester City anytime soon, I don't think his preferred destination will be Paris Saint Germaine. How can a player leave a club as big as Manchester City for a club who is yet to win the UEFA champions league competition trophy in their history.
Sometimes in football, financial package of transfer offers doesn't determine a player's decision so if Paris Saint Germaine tables financial package that's too mouthwatering for Erling Haaland, I don't think it'll make the Norwegian change his mind and leave a Manchester City side that's managed by Pep Guardiola