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The midfielder confirmed in April that he was planning to leave Signal Iduna Park as he sought a new direction for his career, although chief executive Hans-Joachim Watzke later suggested Gotze could decide to sign a new contract.

Head coach Lucien Favre placed Gotze's future back in doubt this week when he admitted the player was not suited to his team's preferred system.

Speaking ahead of Saturday's Bundesliga clash with Wolfsburg, Zorc confirmed Gotze will leave on a free transfer at the end of 2019-2020.

"We will finish our work with Mario this summer," Zorc said. "It's a decision made by mutual consent after a good conversation. Mario is a great guy."

Gotze returned to Dortmund in 2016 having left his boyhood club to join Bayern Munich three years earlier.

The 2014 FIFA World Cup winner, who scored the decisive goal in the final against Argentina, has struggled for regular form and fitness in recent years partly because of a debilitating metabolic condition.

Hertha Berlin is reported to be interested in keeping him in the Bundesliga, but Serie A clubs including AC Milan, Roma and Lazio have also been linked.