The summer transfer window may now be closed but clubs already have one eye on strengthening in the winter window.

Sunday morning's headlines:

Bayer Leverkusen's Julian Brandt keeping options open
Bayer Leverkusen attacker Julian Brandt vows to keep his options open in response to reported interest from Bayern Munich. Read more.

Report: Atletico Madrid open Yannick Ferreira Carrasco contract talks
A report claims that Atletico Madrid attacker Yannick Ferreira Carrasco has been offered a new contract at the Vicente Calderon. Read more.

Ruben Castro 'delighted' to pen new Real Betis deal
Real Betis forward Ruben Castro reveals his 'delight' after signing a fresh contract with his Spanish club, which will run until the summer of 2019. Read more.

New York Red Bulls rule out move for Bastian Schweinsteiger
Signing Bastian Schweinsteiger from Manchester United "will not be a topic" for New York Red Bulls chief Oliver Mintzlaff, who insists that the club are not interested. Read more.

Report: Chelsea join race to sign Pierre-Emerick Aubameyang
A report claims that Manchester City face stern competition from rivals Chelsea to sign Borussia Dortmund ace Pierre-Emerick Aubameyang next summer. Read more.

West Ham United 'to pay £20m for Simone Zaza if he plays 10 more games'
West Ham United will reportedly have to hand over £20m to Juventus, on top of the initial £5m loan fee paid in August, if Simone Zaza makes 10 more league appearances. Read more.

Report: Paris Saint-Germain to make renewed Philippe Coutinho bid
Liverpool midfielder Philippe Coutinho is wanted by Paris Saint-Germain and is expected to be the subject of a bid in January, according to reports. Read more.

Report: Juventus to let Leonardo Bonucci join Chelsea in exchange for Cesc Fabregas
Juventus are reportedly ready to allow Leonardo Bonucci to join Chelsea, but only for a deal involving Cesc Fabregas plus a record transfer fee for a defender. Read more.