The summer transfer window has now been completed, and Barcelona was very active this summer until deadline day.

Chelsea are understood to have paid in the region of £10m plus Marcos Alonso to sign Pierre-Emerick Aubameyang.

But in essence, Chelsea terminated Alonso’s contract with the club in order to permit the Spaniard have ample time to be registered as a Barcelona.

Alonso would now join Barca as a free agent.

Mundo Deportivo referenced article 6 of the FIFA rules which state that players who are unemployed or free agents can sign for clubs outside of transfer windows, provided it does not adulterate the competitive spirit of the competition.

However, Barcelona will try to hurry with the registration of Alonso today, as the registration period for the Champions League ends on Friday evening at midnight.