Emre Can, captain of last season’s runners-up Borussia Dortmund, believes he has been unfairly criticized for his displays ahead of their first match of the new Champions League on Wednesday at Club Brugge. He came on as a substitute on Friday and scored a late penalty in the 4-2 Bundesliga win over Heidenheim. He then formed a talking mouth with his right hand and held his left index finger in front of his lips. The provocative goal celebration was met with incomprehension by some Dortmund fans. “I’m sometimes treated unfairly,” the Germany midfielder told reporters in Belgium on Tuesday. “I …