Anderlecht (BEL)
- In: Matz Sels (Newcastle United, loan), Pieter Gerkens (Sint-Truiden), Sven Kums (Watford), Uroš Spajić (Toulouse, loan made permanent)
- Out: Aaron Leya Iseka (Zulte Waregem, loan), Michaël Heylen (Zulte Waregem), Stéphane Badji (Kayserispor, loan), Youri Tielemans (Monaco), Sebastian De Maio (Bologna)
Atlético Madrid (ESP)
- In: none
- Out: Tiago (released), Óliver Torres (Porto, loan made permanent)
Barcelona (ESP)
- In: Marlon (Fluminense, loan made permanent)
- Out: Jordi Mboula (Monaco)