The winger had a productive 2020-21 season within the Bundesliga, scoring 9 objectives and helping 9 extra.
Villa confirmed in a press release that an settlement had been made with Leverkusen, topic to him finishing a medical and finalising private phrases.
The deal would contain Metropolis paying Villa £90m and a switch of extremely rated younger winger Morgan Rodgers.
Villa wish to preserve Grealish however sources have instructed ESPN that he can be allowed to depart if that was his determination.
Jamaica interntional Bailey joined Leverkusen in 2017 from Genk.