We have seen lots of transfer activity already, but here are the top 10 most expensive deals of the current window so far.
Click through the gallery attached the article to view the top 10 most expensive deals so far.
Liverpool's signature of Robrto Firmino was the biggest deal of this window after the Reds transferred €41 million to Hoffenheim
Atletico Madrid were involved in the second and third-highest deals after buying Jackson Martinez for €35 million from FC Porto and selling Arda Turan for €34 million to FC Barcelona.
Juventus' €32 million deal for Paulo Dybala follows somewhat surprisingly in fourth spot, while Real Madrid's new right-back Danilo comes in fifth place after Los Blancos paid €31.5 million for the Brazilian.
The places six to nine are shared between four stars, who all cost €30 million. Bayern Munich splashed out €30 million in for Brazilian winger, Douglas Costa, while Milan activated Carlos Bacca's release clause.
Monaco midfielder Geoffrey Kondogbia joined Inter for €30 million, while Valencia secured the services of Rodrigo for the same amount.
Read: Gyan Now Highest Paid African Player
Finally, Manchester United's new winger, Memphis Depay cost the Red Devils €28 million.
Who do you think was the best value for money so far? Have your say in the comments section below.
