Damn you Völler. 
I voted 6 because:
A) we solidified our wingback spots, that have given us so much trouble the last couple years because of our lack of ability to rotate (Isla and Peluso as primary rotation options). If we continue with 3-5-2 as one of our formations we need fresh Wingbacks and with all the running they are asked to do, it's nice to be able to rotate them more often, as Licht and Asa are brilliant, borderline dominant when they are fresh, but looked terrible late last season due to overuse. 9/10 for this
B) Evra is a starter in a back 4, and a decent one, and Romulo is a great backup for Licht in a back 4. 8.5/10 for this
C) Coman on a free is brilliant, even if he only becomes a solid bench player. I think he offers something we were missing. Pace, and dribbling with the ball in attack. He's too young currently for raising my mercato score too much, as I think his real impact won't be seen for a year or two. 7/10 for this
D) I think Morata is actually a star in the making. I hate the buyback. Without the buyback, this mercato would probably be bumped up to a 7 or 7.5 for me as I think he is a future star and would be a 50mil plus rated player in the future here. As it is, he'll just be 10 mil profit in a couple years if he turns out amazing. 6/10 for this
E) Sturaro, I'm indifferent too. 10 mil if the numbers are correct is interesting for a player to be loaned out immediately. 5/10 for this
F) Pereyra. We overpaid by quite a bit. It's not like he's 20. He's 23, and really has not shown enough to be worth what we paid for him. I could be wrong, he could explode, but I just don't see it. 10 mil for him would have been great. Solid, versatile squad player. But 15-17 mil seems a little silly for that. 4.5/10 for this
G) We didn't sign an established winger, or an established AM. Hard to change formation to wing based play, or AM based play depending on an 18 year old in Coman, and Pereyra who really hasn't shown that he is of a level to allow for a formation change, especially in Europe. We did sign Coman and Pereyra who can both play as winger and AM though, so: 4/10 for this
H) Even worse, we didn't sign a CB to replace one of Bonucci or Ogbonna. Especially Bonucci. We should have sold him for cheap, and brought in Nastatic who was available from all reports. Or another promising young defender. Barzagli isn't getting any younger and injury woes seem to be bothering him more and more. We did strengthen both LB and RB positions in a back 4 though so: 2/10 for this
Overall 46/80
or 5.75/10 which I rounded to 6/10
I voted 6 because:
A) we solidified our wingback spots, that have given us so much trouble the last couple years because of our lack of ability to rotate (Isla and Peluso as primary rotation options). If we continue with 3-5-2 as one of our formations we need fresh Wingbacks and with all the running they are asked to do, it's nice to be able to rotate them more often, as Licht and Asa are brilliant, borderline dominant when they are fresh, but looked terrible late last season due to overuse. 9/10 for this
B) Evra is a starter in a back 4, and a decent one, and Romulo is a great backup for Licht in a back 4. 8.5/10 for this
C) Coman on a free is brilliant, even if he only becomes a solid bench player. I think he offers something we were missing. Pace, and dribbling with the ball in attack. He's too young currently for raising my mercato score too much, as I think his real impact won't be seen for a year or two. 7/10 for this
D) I think Morata is actually a star in the making. I hate the buyback. Without the buyback, this mercato would probably be bumped up to a 7 or 7.5 for me as I think he is a future star and would be a 50mil plus rated player in the future here. As it is, he'll just be 10 mil profit in a couple years if he turns out amazing. 6/10 for this
E) Sturaro, I'm indifferent too. 10 mil if the numbers are correct is interesting for a player to be loaned out immediately. 5/10 for this
F) Pereyra. We overpaid by quite a bit. It's not like he's 20. He's 23, and really has not shown enough to be worth what we paid for him. I could be wrong, he could explode, but I just don't see it. 10 mil for him would have been great. Solid, versatile squad player. But 15-17 mil seems a little silly for that. 4.5/10 for this
G) We didn't sign an established winger, or an established AM. Hard to change formation to wing based play, or AM based play depending on an 18 year old in Coman, and Pereyra who really hasn't shown that he is of a level to allow for a formation change, especially in Europe. We did sign Coman and Pereyra who can both play as winger and AM though, so: 4/10 for this
H) Even worse, we didn't sign a CB to replace one of Bonucci or Ogbonna. Especially Bonucci. We should have sold him for cheap, and brought in Nastatic who was available from all reports. Or another promising young defender. Barzagli isn't getting any younger and injury woes seem to be bothering him more and more. We did strengthen both LB and RB positions in a back 4 though so: 2/10 for this
Overall 46/80
or 5.75/10 which I rounded to 6/10
About the defender, just read that that kid we've always heard about, Dória, was bought by Marseille for 10m. If he turns out to be as good as Marquinhos that is a hell of a deal that we maybe should have looked into.
Buy on AliExpress.com
