The January transfer window is now officially open for business. Clubs are already making moves to sign players and Arsenal, Manchester United and Tottenham are among those who look set for a busy month. Arsenal are weighing up a move for a new forward after losing Bukayo Saka to injury and the Gunners have been linked with a shock swoop for Chelsea’s Christopher Nkunku, though could face a fight with Manchester United. Dani Olmo, Omar Marmoush and Mohammed Kudus may also be on Arsenal’s radar, plus Viktor Gyokeres.