La Liga superpowers Barcelona and Atletico Madrid are both interested in signing Paris-Saint Germain right-back, Serge Aurier.
Paris Saint-Germain are reportedly interested in River Plate forward Lucas Alario, who has been on the radar of Liverpool and Tottenham for a while now.
There are a number of players in the Manchester United squad who could end up being deemed surplus to requirements by manager Jose Mourinho at the end of the season. Most of them are not automatic starters and have a lot of Europe's top clubs interested.
We take a look at some of the key stories doing the rounds concerning FC Barcelona.
PSG boss Unai Emery says Barcelona made an approach for Marquinhos this summer, after the Catalans and Chelsea were linked with moves for him throughout the window
Arsenal's Mesut Ozil and former Manchester United winger Angel Di Maria looking to return to former club Real Madrid
French side Olympique Lyonnais are monitoring on-loan Chelsea striker Bertrand Traore at Ajax.
Paris-Saint Germain are reportedly set to offer Liverpool £40 million for the services of English attacker Adam Lallana in January.
Arsenal are reportedly set to battle their London rivals Chelsea for the transfer of Marseille's highly rated youngster Boubacar Kamara.
Arsenal manager Arsene Wenger has reacted to his side's 2-2 draw with Paris Saint-Germain