Guys, about Marlon and Mina, imo, you are putting too much faith in them.
Marlon and Mina are roughly guys like Munir, Sandro, Halilovic, Adama etc.
We buy them for cheap and see how they will turn out.
If they turn into a world class=awesome.
If they fail, we will sell them for 1-5 millions and just buy 1-2 new talents every new summer.
Too many of you imo have too high expectations of guys like Marlon.
I am not saying that Inigo is good, but look at it this way:
Verm is a history.
Mathieu is probably gone.
Masch is poor in the last few years.
So, we have only Pique and Umtiti.
If one gets injured, we have only Masch, who is bad.
Marlon played only a few matches in a senior career. So, in a Cl semis, if Umtiti is injured, we have only Pique and poor Masch. Marlon is NOT a serious option.
So, in some way, I could understand a need for the 3rd choice Cb.
Also, imo, one more hint: don't expect too much from guys like Marlon, Mina and similar.
They are new Munirs, Sandros and similar.
Chances are imo 1 out of 10 that we will seriously count on those guys one day.
Imo, saying: don't buy a new Cb since we have Marlon and Mina, is similar to: don't buy Dembele, we have Lee and a few other exciting young Cfs from La Masia.