Athletic Bilbao
In:
Out: Asier Villalibre (Alaves, loan)
Atletico Madrid
In: Antoine Griezmann (Barcelona), Memphis Depay (Barcelona), Matt Doherty (Tottenham Hotspur)
Out: Matheus Cunha (Wolves, loan), Joao Felix (Chelsea, loan), Felipe (Nottingham Forest)
Almeira
In:
Out: Arvin Appiah (Malaga, loan), Fernando Pacheco (Espanyol)
Barcelona
In: Lucas Roman (Ferro)
Out: Antoine Griezmann (Atletico Madrid), Memphis Depay (Atletico Madrid), Alex Valle (FC Andorra, loan), Hector Bellerin (Sporting)
Cadiz
In: Rafa Llorente (Real Madrid), Roger Marti (Elche, loan), Jorge Mere (Club America, loan), Chris Ramos (Lugo)
Out:
Celta Vigo
In: Haris Seferovic (Benfica, loan)
Out: Denis Suarez (Espanyol, loan)
Elche
In: Lisandro Magallan (Ajax), Jose Angel Carmona (Sevilla, loan)
Out: Javier Pastore (Qatar SC), Roger Marti (Cadiz, loan)
Espanyol
In: Cesar Montes (Monterrey), Ronael Pierre-Gabriel (Mainz, loan), Denis Suarez (Celta Vigo, loan), Jose Gragera (Sporting Gijon), Fernando Pacheco (Almeria)
Out: Miguel Llambrich (Cartagena, loan)
Getafe
In: Gonzalo Villar (Roma, loan)
Out: Dario Poveda (Cartagena, loan)
Girona
In: Viktor Tsyhankov (Dynamo Kyiv)
Out: Ramon Terrats (Villarreal, loan), Manu Vallejo (Real Oviedo, loan), Samu Saiz (Sivasspor)
Mallorca
In: Dennis Hadzikadunic (Rostov, loan), Ludwig Augustinsson (Sevilla, loan), Manu Morlanes (Villarreal, loan)
Out: Lago Junior (Malaga)
Osasuna
In:
Out: Juan Perez (Huesca), Javi Martinez (Huesca, loan)
Rayo Vallecano
In:
Out: Bebe (Real Zaragoza, loan) Sergi Guardiola (Real Valladolid, loan)
Real Betis
In: Abner (Athletico Paranaense), Ayoze Perez (Leicester City, loan)
Out: Alex Moreno (Aston Villa), Diego Lainez (Tigres UANL, loan), Loren Moron (Las Palmas, loan), Victor Camarasa (Real Oviedo, loan)
Real Madrid
In:
Out: Antonio Blanco (Alaves, loan), Rafa Llorente (Cadiz)
Real Sociedad
In:
Out: Jon Karrikaburu (Leganes, loan)
Sevilla
In: Lucas Ocampos (Ajax, loan ended), Pape Gueye (Marseille, loan), Bryan Gil (Tottenham Hotspur, loan)
Out: Jose Angel Carmona (Elche, loan), Thomas Delaney (Hoffenheim, loan), Ludwig Augustinsson (Mallorca, loan), Kike Salas (Tenerife, loan)
Valencia
In:
Out:
Valladolid
In: Darwin Machis (FC Juarez), Darwin Machis (FC Juarez), Cyle Larin (Club Brugge, loan), Selim Amallah (Standard Liege), Martin Hongla (Verona, loan), Sergi Guardiola (Rayo Vallecano, loan), Jovane Cabral (Sporting, loan)
Out: Juanjo Narvaez (Leganes, loan), Zouhair Feddal (Released)
Villarreal
In: Ramon Terrats (Girona, loan)
Out: Juan Carlos Arana (Eibar), Geronimo Rulli (Ajax), Arnaut Danjuma (Tottenham Hotspur, loan), Manu Morlanes (Mallorca, loan)