Mason Mount has suffered a hamstring injury that will keep him sidelined for four to five weeks, ruling him out of several key matches, including the clash against Liverpool and the start of Manchester United's Europa League campaign. The 25-year-old midfielder expressed his frustration over the setback, having worked hard to regain his fitness after a challenging previous season marred by injuries that limited him to only 20 appearances. Mount, who joined United from Chelsea for £60 million, had begun all three matches this season before being substituted at halftime during the recent defeat to Brighton. His injury adds to United's injury woes, joining several other players in the treatment room. Manager Erik ten Hag may now have to adjust his lineup, potentially giving summer signing Joshua Zirkzee a chance to start. Mount's recurring injuries have raised concerns about his long-term fitness and contribution to the team.