As I understand it an extra place in the Europa League is opened if Chelsea win the Champions League but do not qualify for the Champions League nor Europa League through domestic competitions. However as you say Chelsea are effectively guaranteed Europe because a league place will be opened due to Liverpool winning the FA Cup so that above scenario is (as I understand it) made redundant.

It's the runners-up of the Carling Cup that do not gain a place under any circumstance. The runners-up of the FA Cup would qualify for the Europa League should Liverpool win it, Chelsea don't qualify through the league and of course don't win the Champions League. However in this case, the runners-up of the FA Cup would be Chelsea!


In that case of Chelsea winning the Champions League then the Europa League qualifers as it stands would be: Newcastle, Tottenham and Liverpool.