Jack Grealish is not playing regularly mainly due to a combination of injury setbacks and a dip in form that has affected his place in the Manchester City team. He has suffered from multiple injuries this season that have disrupted his ability to consistently hold a spot in the lineup. Additionally, Pep Guardiola has suggested that Grealish's limited game time is due to competition with other players performing well in training and matches. Recently, Grealish was left out of Manchester City's squad for the final Premier League game and the Club World Cup squad, indicating he is likely on the fringes at City and may move on, possibly on loan to Everton. Despite his struggles, Guardiola has praised Grealish's quality and contributions in previous seasons but acknowledged the current challenges with his fitness and form.