PedroMendez
Acolyte
I do not understand the signings of Sevilla. I am not much of the opinion of bringing old glories, but let´s see.
Most of them are quite resonable despite being a bit light in some areas. The most important transfer was keeping N'Zonzi.
Banega for Nasri
Muriel for Jovetic
Pizarro for Kranevitter/Iborra (if one considers Iborra a DM/CM)
Kjaer for Rami
Corchia (Navas?) for Mariano
Nolito + Navas for Vitolo.
Arias said, that he is only trying to sign another LB backup, but there are strong rumors that he is also negotiating with Milan about Bacca, who wants to return. That said I only see this happening, if they reduce the fee significantly (atm they want 15m and he is on a high wage). All things considered I am not a big fan.
Banega is an upgrade on Nasri and Pizarro is a quality alternative for DM/CM. There are few affordable wingers, so getting Nolito+Navas for fairly little money while also trusting Correa, Sarabia and Montoya is imo very good business. I liked Mariano and don't really understand why we sold him for 4m, but Corchia should be able to replace him like for like. The two transfers that I am unsure about are Kjaer and Muriel. I don't know much about these two, so hopefully they are positive surprises. I am not a fan of spending 12m on Kjaer, but can he really be any worse than Rami? Additionally hearing, that he was really good in the turkish league gives me at least some hope that this is going to work out. Muriel is imo a huge gamble. 20m is a lot of money (@Skorenzy you are correct, that this is the record signing; #2 is Negredo and #3 Mudo vazquez #4 Kjaer and #5 Arouna Kone) and we need a forward that can score goals. Ben Yedder looks like he is improving under Berizzo, but he alone won't be enough.
Where I really see some problems is in midfield. N'Zonzi, Banega and Vazquez are imo a quality trio, but with Pizarro and an aging Krohn-Dehli we have very little options. If one of the three starters is getting injured for a longer period of time, we are in serious trouble. Ganso is just a waste of space. I can run faster than this guy. Montoya can play there but I am unsure about him. I would have loved to see another player for the CM. Wass would have been imo a great transfer, but that didn't happen.
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Atletico only signed Vitolo (he'll join them in winter), but Vietto and Kranevitter are coming back. They already solid Oliver Torres (I am still a huge fan), Cerci and Theo, while Tiago ended his career. I don't think that Vietto will flourish despite some good performances in pre-season. Maybe I am wrong, but he lost all his magic. Rumors are, that he is going to leave if anyone is willing to make a resonable offer. Kranevitter is probably also leaving (Zenit). Borre and Amath are probably also on their way out.
Thomas could be their "new-comer of the season". With Tiago retiring, Simeone seems to trust him. He has the potential to become one of the players of the season. He should partner Gabi (I am a huge Augusto fan, but Thomas is their future in CM). Gaitan played a good pre-season and is getting another chance, but I doubt that he is having a big impact. Keidi from their cantera might get a couple of minutes, if needed. He scored a goal against Liverpool. Usually he'll play for the cantera so.
Overall they have a few players who could step up (Thomas, Gameiro, Correa, Vrsaljko), but Simeone somewhat struggled to refresh the midfield in recent years. Doing that will be key for the success of the team.
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Villarreal got R Semedo, Enes Unal and Pablo Fornales as their top signings. Pablo Fornales for 12m is imo very good business. They lost Mussaccio and dos Santos. They are still a solid team.
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Valencia is cleaning up their squad and there are imo promising signs under Marcelino. I think he'll finally be able to steady the ship. Ryan, Perez and Negredo (top earner?), Piatti (was already on a loan), Alves and Bakkali are out. Perez, Negredo and Alves were all on huge wages.
Other players (Cancelo, Abdennour, orellana, Vezo, Nani, Araujo, Rodrigo) might also be on their way out, if anyone is willing to make reasonable offers. We'll have to wait. Only Cancelo would fetch a high fee, but Valencia has to get rid of all the dead-wood.
Murillo is on his way in. If Marcano comes as well, Garay will be sold. They also look for another quality CM (Kondogbia or Krychowiak might be options).
They have 2-3 good talents from their second team who could play minutes. Overall key is to change the attitude of the team. They had too many bad-apples with questionable character. Nobody played for the shirt. I think they are on a good way to change that, but its too early to tell. Not sure if making Parejo the captain is a smart idea....