It is however a one-year loan deal, with an option for Atleti to buy Griezmann for €40million.
This was confirmed by transfer expert, Fabrizio Romano, in a tweet on Tuesday night.
Romano wrote: "Antoine Griezmann back to Atletico Madrid, HERE WE GO! Agreement now completed with Barcelona. Loan until June 2022 with buy option for €40m. ️
"Griezmann has an agreement for a two years contract plus one option. He's BACK at Atléti. Shocking move of the day."
Griezmann joined Barca in 2019 for €108m in a controversial deal that saw their LaLiga rivals institute a legal case which was eventually thrown out.
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