#4 Angel Di Maria
The Argentine playmaker will walk into most sides in Europe but he has found it difficult at Paris Saint-Germain due to the depth they possess. Neymar, Kylian Mbappe, and Edinson Cavani are ahead in the pecking order and Di Maria will find it hard to usurp them.
Also, PSG are trying to navigate past muddy waters regarding UEFA's Financial Fair Play rules due to the mammoth signings of Neymar and Mbappe last summer. Hence offloading the likes of Di Maria could be a need rather than a choice.
Di Maria's preferred position is not the one which Griezmann will vacate, but Atletico has great depth in striking options to fill that void. Di Maria can play on either wing and his playmaking ability is one of the few things Atletico lack.
Atletico will have a tough time matching his wages in Paris but Di Maria could also look to compromise for guaranteed playing time.