If David Moyes is looking for encouragement that West Ham can beat Bayer Leverkusen then he now has plenty. West Ham annihilated Freiburg 5-0 to advance to the last eight of the Europa League. Their reward? A quarter-final tie against another Bundesliga side. As far as German teams go, they don’t come much tougher than Xabi Alonso’s remarkable table toppers Bayer Leverkusen. Astonishingly Leverkusen are unbeaten across all competitions this season. And they remain so too after beating the team West Ham have just vanquished with ease. Freiburg just played Bayer Leverkusen and West Ham boss Davi…