the reigning champions face diego simeone 's side at vicente calderon on tuesday night in the first leg of the last eight clash having failed to beat their neighbours in six attempts this season .
carlo ancelotti 's side lost both la liga matches against atletico this season - 2-1 at the bernabeu before a humiliating 4-0 away defeat - and have also been beaten twice and held to two draws in the spanish supper cup and the copa del rey .