The defeat means Dortmund are 13th and must get a result against Shakhtar Donetsk in their final league phase game to have the chance to qualify automatically for the knockouts. For the first time in the competition, the German side have lost multiple games after scoring the opening goal.

Nuri Sahin enjoyed a stellar career as a player at Borussia Dortmund, but his tenure as manager of the black and yellow has been mediocre at best. Friday's loss at Eintracht Frankfurt only emboldened fans of the German club to call for a change in leadership for the squad.

Borussia Dortmund coach Nuri Sahin said he still felt the trust from his players but would talk to club bosses after Tuesday's shock 2-1 loss to Bologna in the Champions League that stretched their losing run to four games across all competitions.

Sahin was a ball boy at Dortmund before becoming the youngest player to play in the Bundesliga when he made his debut aged 16. He was assistant coach to Edin Terzić last season

Borussia Dortmund coach Nuri Sahin failed to receive the full backing of managing director Lars Ricken on Tuesday after the 2-1 Champions League defeat at Bologna. The Germans took the lead in Italy but ended up with a fourth straight defeat in all competitions.