Atletico said they felt the "strongest disapproval" of those they allege to have been involved, claiming talks between Barca and Griezmann took place at a delicate stage of the season and in violation of transfer rules.
That appeared to rankle with Atletico, who issued a statement that read: "On May 14, Antoine Griezmann informed [chief executive] Miguel Angel Gil, [head coach] Diego Simeone and [sporting director] Andrea Berta of his decision to leave our club at the end of the season".
During the press conference, Bartomeu also said that Neymar wants to leave PSG, but that the French club do not want to sell him.
Fire on Russian Submersible Kills 14
Russia's president has sent minister Sergei Shoigu to investigate the incident and establish what happened to the submarine. Vlaidmir Putin 's government said the report included "classified information" - fuelling speculation around the blaze.