Maybe my perspective is wrong, but I see Marquinhos as overhyped mediocre. Many games I watched PSG, and he never impressed me much. But, he is young and experienced, I give him that...
I don't think he is overhyped - he is very solid for his age. He is 21 which is still
really young for a CB, and has performed consistently well in his time with PSG - but of course it helps playing along side Thiago Silva(!). Look at Varane og Gimenez - young players doesn't top-perform as consistently as older ones, it is quite normal. I wouldn't be worried about his qualities if we get him.
Marquinhos Wants out so think it's likely we sign him
This is only because the papers write about
as if it is a possible transfer, IMO. If you like at reality it would be a extremely difficult transfer:
There is no guarantee that the club will be more likely to sell, just because the player wants to go. I have seen Laurent Blanc say that the CB-situation needs to be solved this summer - but ask yourself: Does he have any real power in the club? I don't think so, Nasser will decide what's going to happen. I mean, look at the Aurier-case - you are not out of the club no matter what you do, if you are young and have quality, it appears.
On top of that everybody with a minimum of footballing intelligence can see that Luiz is a disaster when it comes to defending. So wouldn't it be just as likely that they would double Luiz wages and convince him to be a sub from now on, and then play Marquinhos?
And again, according to the papers the prize would be around 50 m. € - why that number? It is a big fee for a young defender, but he could be worth it. But why wouldn't PSG want him to be the worlds most expensive defender ever? They have no need to sell, so why not demand 60+ m. - the PL have more money than ever and players like Otamendi went to City for 45 M., so it is not unrealistic that a PL-club would pay that sum, I think.
Don't misunderstand me - I would love to see him in our team, but I don't think it is likely at all. I hope it happens, but to consider him "alternative" if we can't work it out with Laporte would be quite arrogant, because a transfer with one of PSG's better players will probably take all summer to finish, and most likely not end with us getting him.