Nigeria striker Anthony Ujah has apologised to Cologne fans on his tearful farewell having previously been photographed with his future club Werder Bremen.

The 24-year-old Super Eagles forward was booed and whistled by home fans after being substituted in the second-half of Cologne's 2-2 draw with Wolfsburg on Saturday in his final appearance for the Rhineland club before joining Bremen next season.

But the Nigeria international fell offside with Cologne's bosses and fans alike after being photographed with his future club three weeks ago under the caption: "100 percent Werder".

It did not go down well with Cologne, particularly as their survival in Germany's top flight was not confirmed at the time.

"The fact my own fans whistled and booed me really got to me," admitted a tearful Ujah, who has scored 10 goals for Cologne this season.

"I apologise for how things turned out, that wasn't good," he added referring to the Bremen picture.

Cologne's vice-president Toni Schumacher, sporting director Joerg Schmadtke and coach Peter Stoeger had all criticised Ujah publically, but the loud whistles when he was substituted after 48 minutes against Wolves clearly had an affect.

"He had tears in his eyes, and they weren't put on," said Cologne defender Dominic Maroh.

"He knows himself that his farewell could have gone better, but we will miss him."