The Cologne coach, who signed Emmanuel Dennis on loan from Club Brugge, has admitted it was bad piece of transfer business.
Dennis did not score a goal and only managed an assist in nine appearances in the Bundesliga as Cologne fought to stay up in the German top flight.
Like it was in Belgium, Dennis was also disruptive to the group, according to Horst Heldt.
“He was not an easy boy. We knew about those problems, but we took too much risk. It was a bad judgment,” Heldt told Express.
“Dennis caused a stir with his behaviour. We dropped him because the group was our priority.
“It was a bad transfer and I take responsibility.”
