Lisbon - Sporting Lisbon says its efforts to sign midfielder Kevin-Prince Boateng have ended after the two sides failed to reach agreement on the player's image rights.
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The Ghana international arrived in Lisbon on Tuesday for talks with the Portuguese club after being released by German club Schalke in May.
But Sporting announced on its Facebook page on Wednesday that negotiations were over.
Schalke signed Boateng from AC Milan in 2013, and he still had another season on his contract. However, he disappointed at Schalke, where there were hopes he could develop into a team leader.