Having been handed a Champions League ban, Manchester City could lose manager Pep Guardiola.
Philippe Coutinho has reportedly been told he can leave Barcelona for £77million (€90.7m) at season's end.
With Ivan Rakitic seemingly preparing for a Barcelona exit, Atletico Madrid are making their move.
Erling Haaland, Zlatan Ibrahimovic and Takumi Minamino headline the list of the best signings of the January transfer window.
Barcelona revealed two signings on deadline day, Atletico brought in a familiar face, while Juventus' Emre Can moved to Borussia Dortmund.
Valencia have reached an agreement with Roma to loan Italy international Alessandro Florenzi for the rest of the campaign.
Roma announced two new arrivals on Thursday, with Carles Perez and Gonzalo Villar arriving from Barcelona and Elche respectively.
Negotiations with Valencia for forward Rodrigo have reportedly come to a halt, with Barcelona seemingly set to look elsewhere.
Paris Saint-Germain are considering a move for Arsenal star Pierre-Emerick Aubameyang.
Juventus' winning run has given Maurizio Sarri encouragement as he suggests they face their toughest title race in several seasons.