Wydad Casablanca coach Michel Decastel revealed his concern over his side's preparation for Sunday's Champions League clash against Ahli. The former Zamalek coach returns to Cairo to face the six-time African champions, who were just crowned with the Egyptian Premier League title a few days ago. “My experience with Zamalek should help me against Ahli. I also watched a few games for them lately,” the Swiss manager said. “What worries me is my team's readiness in comparison to Ahli. “Ahli have not stopped playing competitive matches recently, but for us, it was just a few friendly games.” Ahli have a chance to take top spot if they beat their Moroccan visitors after Esperance and MC Alger drew 1-1 in the group opener on Saturday.