Bayer Leverkusen will play their first home game since players and fans took it to the pitch to celebrate the club’s maiden Bundesliga title, and coach Xabi Alonso said that “the grass is good and playable.” “We spoke to the greenkeepers. They say the grass is good and playable. After the celebrations it’s important to have it in a good condition,” he said in a news conference on Friday. Leverkusen host VfB Stuttgart on Saturday. Since claiming the title on April 14 against Werder Bremen, they only played away games at West Ham in the Europa League and at Borussia Dortmund. Alonso will be with…