Dedryck Boyata has signed for Hertha Berlin on a long-term deal after leaving Celtic at the end of the season.
Borussia Dortmund remain on the heels of leaders Bayern Munich after a comfortable 4-0 home victory against Freiburg on Sunday.
Bayern Munich moved back to the top of the Bundesliga after Kingsley Coman's first-half brace spearheaded a comfortable 4-1 victory at Fortuna Dusseldorf.
Paco Alcacer scored twice in injury time for Borussia Dortmund to reclaim the Bundesliga lead with a 2-0 win over Wolfsburg.
Marco Reus' stoppage-time strike settled a five-goal thriller against 10-man Hertha Berlin to lift Borussia Dortmund three points clear at the top of the Bundesliga.
Bayern Munich seized the Bundesliga lead from Borussia Dortmund by demolishing Wolfsburg 6-0 on Saturday.
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