Griezmann is reportedly yet to decide on his future, but it seems Atletico already think he will leave and are making plans to replace him.
Antoine Griezmann and Alexis Sanchez could be on the move this summer
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The Chilean is yet to agree a new deal with the Gunners and Atletico are ready to take advantage of the situation.
The report suggests Atletico officials have already opened talks with the forward's representatives to sound out the possibility of a move.
Alexis Sanchez is attracting interest from Atletico Madrid
Sanchez currently pockets £160,000 a week at the Emirates, but Diego Simeone's side are willing to offer him £220,000 a week in order to persuade him to move to the Spanish capital.
The 28-year-old will reportedly wait until Arsenal make him an offer of a new contract before deciding on his future.