Barcelona goalkeeper Marc-Andre ter Stegen says that their defeats to Roma and Liverpool in the Champions League weren't tactical.
The La Liga side lost 4-0 to the Reds in last season's Champions League, after having won 3-0 in the first leg of the semi-final. Barcelona were eliminated, while Liverpool went on winning the UCL trophy.
In an interview with 11 Freunde (via Marca), Ter Stegen said: ""These results didn't come through tactical issues, it was psychological.
"One must look into those psychological issues deeply. This is why I would never say that this can't happen to us ever again.
"We were all frozen because there was no explanation."