PSG wouldn't wait for Pochettino's contract to expire indeed. They didn't become successful in the Champions League and they were even eliminated by Real Madrid in the early stages of it. This is of course unacceptable for the team as they were aiming to win the title. We expected so much thing from the Mbappe-Messi-Neymar trio but they weren't very effective all the time. Mbappe had a far better season than them. And he is leaving this summer most probably. The new manager will need to work hard to make this team much better than before.
I believe anyone who trains PSG, which famous or ordinary coach will get the Ligue 1 title because PSG has the best materials squad. Maybe for this time, Pochetino has to finish his contract in PSG and move on to another league or back to England. PSG has ambitious to get the Champions League title after Pochetiono makes Tottenham as Finalist, but it was not the expected if got the Ligue title only which ordinary coach can do that.
It's true it won't be too difficult for any coach to make PSG win the Ligue 1 trophy, because PSG have strong finances, so that they can bring in
the star players they want. Moreover, other teams in Ligue 1 have different financial strengths from PSG, so there is a big difference between
the quality of PSG's players and other teams in Ligue 1. So it's quite easy for PSG to win the Ligue 1 trophy, PSG's big target is to win
the Champions League trophy. But unfortunately PSG until now still failed to win the Champions League trophy, PSG's best achievement in
the Champions League may only be runner-up in 2020.
That's why PSG signed Pochettino and bought a lot of star players, but still PSG failed to win the Champions League trophy this season too.
It is possible that at the end of the season PSG will sack Pochettino and replace him with another, more experienced coach. In order to make PSG
win the Champions League trophy next season. Not to forget PSG will also try to bring in some new players in the transfer market this summer,
because to replace some PSG players who will move, and also to further strengthen the PSG squad. But still the key to PSG's success must be looking
for a coach who is experienced in handling the many star players at PSG, usually star players have an unruly egotistical attitude. Because at the moment
I don't see Pochettino being able to control the attitude of the star players at PSG, therefore there does not appear to be a good cooperation between
the players. So it's only natural that PSG were finally eliminated by Real Madrid in the Champions League.