Hertha Berlin have completed a deal to sign 18-year-old striker Daishawn Redan from Chelsea, Sky Sports News understands.
Marko Grujic has rejoined Hertha Berlin on a season-long loan from Liverpool.
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.
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