Right-back Dani Alves, 31, is close to walking out on Barcelona - with Manchester United hot on his trail.
Liverpool and Real Madrid are just two of the clubs interested in £12m-rated Villarreal striker Luciano Vietto, 21, who has hit 11 La Liga goals this season.
West Ham have seen off London rivals Arsenal and Spurs with a £19.5m deal to keep defender Winston Reid at the club until 2021.
Meanwhile, Arsenal are set to end Abou Diaby's injury-plagued spell at the club and either Mikel Arteta or Mathieu Flamini could also follow him to make way for a major summer signing.
Chelsea plan to boost their Belgian contingent with summer swoops for Anderlecht midfielders Youri Tielemans and, 17, and fellow teenager Leander Dendoncker, 19.
Sky Bet League One side Bradford City want to open contract talks with manager Phil Parkinson in the summer after leading them to the FA Cup quarter-finals after wins over top-flight sides Chelsea and Sunderland.
Lille want to keep Manchester City attacking midfielder Marcos Lopes, 19, on loan for another season.
Chelsea are watching Anderlecht midfielders Youri Tielemans, 17, and Leander Dendoncker, 19.
Arsenal have been told to cough up £29.2m to sign Borussia Dortmund ace Pierre-Emerick Aubameyang.
Paul Pogba has urged Manchester United midfielder Andreas Pereira to join him at Juventus after the 19-year-old claimed to haved turned down a new Old Trafford contract.
Striker Radamel Falcao, 29, will have to wait until May to discover whether Manchester United are to make his loan move from Monaco permanent.