left to play in the United Arab Emirates to join Al-Ain and has since moved to another low-quality, high-rewards league in China, where he plays for Shanghai.
has been plagued with injuries after making a move on loan from China last year.
(below) joined Sunderland from French side Rennes in 2010, scoring 10 goals in 34 Premier League appearances for the Black Cats in a two-year spell.
, signed from Sunderland in 2011, smashed an impressive 44 goals in 40 matches last season.
But the fourtime winners looked like coming up short before Gyan
showed his predatory instincts with virtually the last kick of the game.
And the Portugal goalkeeper made another contribution minutes later, getting his hands to a header from Gyan
after the former Sunderland striker met a free-kick from Kwadwo Asamoah.
The police lodged a complaint against Gyan
Singh under Section 427 of the IPC.
Singh has been charged under section 427 of the Indian Penal Code for committing mischief and thereby causing loss or damage.
A Sunderland statement said: "Sunderland AFC can confirm that Ghana international Asamoah Gyan
has joined United Arab Emirates side Al-Ain on a permanent deal.
WORLD CUP STAR: Asamoah Gyan
"The striker initially joined the recently-crowned Etisalat Pro-League champions on loan in September 2011 but will now remain in the Gulf state after the clubs agreed undisclosed terms.
, who last year left the north-east club for a season-long loan move to the UAE, said everything has been "perfect" in a season in which he has been the league's top scorer and led Al Ain to their 10th title.
, 26, went to wealthy Al Ain six months ago and his expires in the summer, with the Arab outfit keen to keep him.