Borussia Dortmund CEO Hans-Joachim Watzke has claimed Jadon Sancho lost his focus amid links with Manchester United, admitting the winger had "already prepared for a change".
Sancho's future at Westfalenstadion was the subject of much speculation during the summer transfer window after United identified the 20-year-old as their primary target.
Negotiations went on for a few months but Dortmund ultimately stood firm on their €100 million (£90m/$123m) valuation of the winger, which the Red Devils refused to meet due to the financial uncertainty caused by the coronavirus crisis.
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Sancho's form has dropped significantly since the conclusion of the saga, with the England international only managing to score five goals in 19 appearances for Dortmund in the first half of the 2020-21 campaign.