With all eyes fixed on the January transfer market, clubs around the UK and Europe are already lining up potential mid-season moves.

Friday morning's headlines:

Chelsea plotting shock January swoop for Arsenal's Olivier Giroud?
Arsenal's Olivier Giroud is linked with a shock move to London rivals Arsenal. Read more.

Arsenal 'unwilling to sell Alexis Sanchez for less than £30m in January'
Arsenal reportedly set Alexis Sanchez's price tag at a minimum of £30m. Read more.

Manchester United to offer Ander Herrera, Juan Mata for Saul Niguez?
Atletico Madrid midfielder Saul Niguez is reportedly wanted by Manchester United, who are willing to include Ander Herrera and Juan Mata as part of a swap deal. Read more.

Report: Cristiano Ronaldo issues Real Madrid contract ultimatum
A report claims that Cristiano Ronaldo has no intention of signing another new contract at Real Madrid unless his £365,000-a-week wages are increased. Read more.

Arsene Wenger: 'I want Theo Walcott to stay at Arsenal'
Arsene Wenger insists that Theo Walcott still has a part to play for Arsenal in the Premier League this season, despite restricting him to just 47 minutes so far. Read more.

Stuttgart midfielder Berkay Ozcan: 'I've held talks with Arsenal'
Stuttgart midfielder Berkay Ozcan says that he and his representative have held talks with Arsenal ahead of a potential move in January. Read more.

Liverpool consider January move for Porto goalkeeper Iker Casillas?
Liverpool are reportedly considering a move for goalkeeper Iker Casillas, who could be allowed to leave Porto during the January transfer window. Read more.

Newcastle United, West Bromwich Albion 'consider Conor Coady move'
Newcastle United and West Bromwich Albion both want to sign Wolverhampton Wanderers midfielder Conor Coady, according to a report. Read more.

Ronald Koeman: "I had Olivier Giroud in the building"
Former Everton boss Ronald Koeman says that he had Arsenal forward Olivier Giroud "in the building" during the summer transfer window. Read more.

Luke Shaw, Jose Mourinho 'not on speaking terms'
Luke Shaw's Manchester United career could be over as the left-back is reportedly no longer on speaking terms with head coach Jose Mourinho. Read more.