In the lead up to the final, Hummels had been critical of Terzic's methods. "I was furious because I was of the opinion that Borussia Dortmund shouldn't play like that - against any opponent in the world," he said last month. "I didn't think it could go on like this. I felt insulted in my honour to stand on the pitch in that kit. So submissive, so inferior in footballing terms. The two Stuttgart games and the away game in Leverkusen. That was barricading with 11 men in the box."
It's understood that these comments angered Terzic, with the duo having a fiery discussion just days before the showpiece event at Wembley.