Premier League giants Manchester United and Arsenal are reportedly keeping a close eye on Porto's 22-year-old Portuguese right-back, Alberto Costa. Both clubs are said to be monitoring the defender, but they may face competition from French club Paris St-Germain.
In other transfer news, Manchester City are reportedly prepared to demand a hefty price for Norway striker Erling Haaland, 26, should the club face relegation from the Premier League due to financial rule breaches. Chelsea, Arsenal, Bayern Munich, Real Madrid, and Barcelona are among the clubs reportedly interested in Haaland and are closely watching Manchester City's situation.
Meanwhile, Liverpool reportedly retain an interest in Real Madrid's 26-year-old France midfielder Aurelien Tchouameni, despite him signing a new long-term contract with the La Liga club this past summer. Besiktas president Serdal Adali has also reportedly vowed to sign Newcastle's 27-year-old English midfielder Joe Willock in January, claiming Willock has already chosen Turkey as his new home.