FC Barcelona showed interest in Mathis Albert before Borussia Dortmund extended his contract. Borussia Dortmund has successfully extended the contract of the 16-year-old winger, Mathis Albert, who has attracted interest from top European clubs including FC Barcelona, Bayern Munich, and Manchester City. The deal was finalized behind closed doors, securing the future of the American-born talent who already plays in Dortmund's U19 team and has experience in the UEFA Youth League.