Kicker reports that Aubameyang was dropped earlier this month for turning up late to training, and he was sent off in Saturday’s 4-4 draw with Schalke.
Dortmund led 4-0 in a remarkable Ruhr derby and were still two goals up when the Gabonese international was dismissed for a second yellow card.
Bild understands that Dortmund would be prepared to let Aubameyang leave in the winter transfer window for £54m - a price which should interest Tottenham Hotspur.
Spurs are in desperate need of an X-Factor signing to take them to the next level and Aubameyang has been one of the most prolific forwards in Europe for years.
Despite his off-field problems, the 28-year-old has found the net 17 times in 19 matches this season, on the back of 76 in 91 across the previous two campaigns.
Most of Tottenham’s title rivals all have at least two top-class strikers while the goalscoring responsibility at Spurs falls too heavily on the shoulders of Harry Kane.
Aubameyang could play alongside Kane in the 3-5-2 system that Spurs have recent used, including last week's 2-1 win over Dortmund in which both players scored.
The coveted striker would have been out of Tottenham’s price range over the last 18 months, but Dortmund’s valuation means he is now within their reach.