Arsenal lost 1-3 in FA Cup game against Manchester United at the Emirates.
Gunners' midfielder Mesut Ozil was left out of the starting XI but came to replace Alex Iwobi in the 64th minute.
During his press conference, Unai Emery was asked about Mesut Ozil not starting against Manchester United.
He said: "He played. I can play other players [too]."
Arsenal's next game is against Cardiff City on January 29th at the Emirates.