Manchester United midfielder Ji-Sung Park has slated his own form this season.
Park played poorly in United's 1-0 win over Valencia on Wednesday and revealed afterwards that he was physically and mentally not ready for the new season.
"I'm not satisfied with my performances this season," said Park. "I have to improve. I have to show more on the pitch. Particularly in the first-half [against Valencia], my performance was bad. The second-half was better.
"I am still looking forward to the future. But I have to show I can do better. I don't know why my performances have not been good. Maybe I was not ready for the season. Mentally I have been weak.
"But I missed a couple of games and then played again. It is always difficult to balance the performance. But since I joined Manchester United it has been like that. I know how to deal with that. I have to improve."
