The reports about Kylian Mbappe joining Chelsea this summer doesn't look like a deal that's gonna go through considering the terms that's been stated by the player.
According to reports, Kylian Mbappe can only come to Chelsea if the London club will accept a one year contract with the club which literally means that by next summer he'll be a free agent to decide wether to continue playing for Chelsea or leave the club for free. It'll be very difficult to see big European club that'll consent to such deal for a player of Mbappe's age.
Haha as I said before there is no longer any point in linking Mbappe to the Premier League because we already know Mbappe only went to La Liga Real Madrid
If there is any other news about Mbappe I think it will be for media purposes only, as you said Mbappe can only play one season and of course Chelsea and other clubs don't want to pay for that especially PSG definitely want a lot of money.