History has shown that Bayer Leverkusen are well advised to keep their feet firmly on the ground despite an impressive 3-0 Bundesliga victory over Bayern Munich for which they received huge praise. Leverkusen are five points clear of Bayern at the top now, and coach Xabi Alonso was quick to say “ask me again in May” when quizzed by Sky TV about a possible first league title for the club. “We can celebrate today, and maybe tomorrow. But on Monday preparations start for the new game. That’s football,” he said, leaving the players no room to celebrate carnival season which culminates on Monday. L…