The result piles more pressure on already-embattled Nuri Sahin, who still enjoyed the backing of club bosses after their midweek defeat by struggling Holstein Kiel.
"The way that Frankfurt play football is good for Omar ... has been such that he has started every single game for the club in the Premier League and the Champions League this season.
However, with Frankfurt third in the table behind Bayern Munich and Bayer Leverkusen and fifth in the Europa League standings, City executives are not convinced the German club will consider ...