SCOTLAND international Oliver Burke has been warned he's not performing to his full potential in the Bundesliga by Werder Bremen's own technical director.

The former Celtic loan forward completed a free transfer to Werder Bremen in the summer, after previously costing £28 million in combined fees when RB Leipzig and West Brown signed him.

He initially made an encouraging start by scoring in consecutive games against Stuttgart and at Borussia Dortmund in the German league.

But since then, the 25-year-old has failed to score and has been a sub for 13 of the 14 league appearances he's made for Werder.

And Werder Bremen technical director Clemens Fritz has demanded more from the 13-times capped forward, who won his last cap for his country two years ago.

Fritz said: "With Oliver, it's a case that with all the attributes he has, he has more in the tank than he is showing. And I have told him that too.

"He needs to show his abilities better and more frequently otherwise he will find it hard to beat off the competition for a starting slot."

Burke admitted when he joined he had failed to live up to the initial hype when he first burst onto the scene.

He said: "Everyone knows there have been ups and downs in my career and a lot of loans. This is a new opportunity for me.

"I hope that one day I can call Werder Bremen my home. I want to be happy again when I play football.

"Of course, you doubt yourself a bit when you don't play. But I know what I can do and the more confidence I have, the brighter my qualities shine. I know I can score more goals."

Burke scored four goals for Celtic in a loan spell four years ago.

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