Rio Ferdinand has declined to make an official complaint after a coin hit him in the Manchester derby, police confirmed.
The Manchester United defender was cut above his left eye at the end of the match at Manchester City's home ground, the Etihad Stadium, on December 9.
A spokeswoman for Greater Manchester Police said: "He (Ferdinand) did not put in a formal complaint about the matter.
"He was asked if he wanted to but he didn't. We are still making inquiries and trying to identify this person from CCTV footage."