Borussia Dortmund aim to block all outside noise ahead of the Champions League final against Real Madrid in London on June 1. “We need a strong focus on football over the next few days. All organizational issues must be put aside. That’s a very important learning from my career,” sporting director Sebastian Kehl said. He hopes that all players are focused on the sporting aspects and not on trying to get tickets to the final for their family and friends. “We will organize this. After that, there will be no more ticket requests. We want to minimize all unrest factors,” Kehl said. After a two-day…