Pep Guardiola told exit of ‘world class’ Jack Grealish would be a grave error as Aston Villa Manchester City’s Jack Grealish faces uncertain future amid limited game time. Former City player Paul Dickov defends Grealish, highlighting key contributions to the treble-winning season, particularly in Champions League matches. Dickov believes Grealish would thrive elsewhere, calling him a “world-class player” with “ability second to none.” Aston Villa among clubs linked with the England international.