United States forward Bobby Wood missed Hamburg's Bundesliga defeat at promoted Hannover on Friday because of a reported knee injury.
Promoted Hannover defeated injury-hit Hamburg 2-0 at home in the "little northern derby" to maintain their fine start to the Bundesliga on Friday.
Dortmund love to play attacking football and while they may get away with throwing numbers forward against Koln, it remains a risky game to play.
Carlo Ancelotti joked he will put on a party for his critics at the end of the season where they can discuss tactics.
Peter Bosz believes his side's defeat to Tottenham in the Champions League adds extra pressure.