'I thought about retiring after the attack'

Ginter's revelation came as he testified in the trial of German-Russian Sergei Wenergold, who admitted attacking the Dortmund team bus with explosives ahead of their Champions League clash with Monaco last season as he looked to force their stock price down to make money on the stock market.

Weeks after the attack, Ginter left dortmund for his current employers, but it is clear that his is still haunted by Wernergold's actions.

"We are always exposed to a great risk," Ginter explained.

"I have also thought about whether it is still worthwhile to take this risk again and again.

"Nothing is 100 percent secure, that's why I did not want to give up something which is fun."

Recalling the incident itself, which left team-mate Marc Bartra hospitalised, Ginter said: "Shortly before we left for the match, I was talking to Marc Bartra.

"He knew the left-back from Monaco and gave me some tips.

"I sat in the left rear (of the bus). Then there was a loud bang."

"Everyone was lying on the floor (of the bus). Splinters flew in. There was smoke inside. Marc cried out. We did not know what was going to happen next."