Cologne, relegated from the Bundesliga last season, guaranteed promotion on Monday with a 4-0 win at Greuther Fuerth.
Borussia Dortmund scored a pair of dramatic late goals to overcome a major scare and advance in the DFB Pokal with a 2-1 extra-time win.
Earlier this month, Stuttgart revealed that they hoped an agreement could be reached for a permanent transfer, which was announced on Sunday.
Stuttgart are hopeful they can reach an agreement with German second tier club Greuther Furth over the future of U.S. international Julian Green.
U.S. international Julian Green, on loan from Stuttgart, secured to Greuther Furth another year in the 2. Bundesliga with a goal on Sunday.
On July 1, 2014, Julian Green had the world at his feet, now he's playing for Greuther Furth on loan. He tells ESPN FC about his career.
Julian Green insists he wasn't rushed into the U.S. national team setup and credits then-manager Jurgen Klinsmann for a shot at the 2014 World Cup.
Green, 22, joined Stuttgart from Bayern Munich in January but has struggled for regular playing time.
Douglas Costa's first-half goal was all Bayern Munich needed to beat Wolfsburg 1-0 and advance to the DFB Pokal quarterfinals on Tuesday.
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