first of all can you read? I said the season after the next one. Pochettino will most likely stay next season at Spurs but then who knows..
second of all we have some good young players and what is Mourinho's record with young players, you can google it so you have a clue, his playstyle is more or less built on discipline and highly organized defensive approach, that's why he uses a lot of experienced players, cant see Rashford/TFM/ getting as much time as under any other manager, they are all learning and make mistakes, which is not allowed under Mourinho.. exception might be Martial and Shaw who are already one of the best in their positions in the league, then you mention Darmian as a promising talent, what on earth are you on? totally average player and waste of money and time.
There is no guarantee he will be success here, he might have won some trophies in the past but he would be taking over a team in transition, not sure if fans like you understand this. It¨s a big concern. Van Gaal had a good record as well and is totally failing, not to mention proven players like Falcao, diMaria and some other in the past, it's the worst environment for Mourinho to come in... if things go bad he will totally destroy it here and we will go down even further..