Manchester United midfielder Shinji Kagawa has admitted his "irritation" after struggling to make a significant impact at Old Trafford.
The 24-year-old joined the Red Devils from Dortmund in the summer of 2012 having won the Bundesliga title with Jurgen Klopp's side, but has found it tough to hit similar heights since making the move to England.
Kagawa has again been used sparingly by David Moyes, having found himself in and out of the team under former manager Sir Alex Ferguson, but the Japan international is determined to turn the corner and get over
