By Ewan Murray Even the most pessimistic Liverpool fan will probably accept that the Reds have booked their spot in the Europa League quarter-final. Jurgen Klopp’s side boast a 5-1 last 16 first leg lead against Sparta Prague, with the second fixture against the Czech champions coming this Thursday at Anfield. To say the Reds have one foot in the last eight would be an understatement. With a mouth-watering trip to Old Trafford to face rivals Manchester United in the quarter-final of the FA Cup this Sunday and an exhausting title clash with Manchester City having just been and gone, Klopp could…