Because of accumulated yellow cards, Chelsea midfielder John Obi Mikel will miss the return leg of the Champions League semifinal clash with Atletico Madrid next Wednesday, April 30.<br /><br />Referee Jonas Eriksson cautioned the Nigeria international in the 75th minute at the&nbsp; Estadio Vicente Calder&oacute;n (Madrid).<br /><br />And this automatically rules him out of the reverse fixture, having picked up bookings in previous games against Basel and Steaua Bucharest.<br /><br />Chelsea are favored to qualify for the final match after they held&nbsp; Los Rojiblancos to a goalless draw in front of 52, 560 spectators.<br /><br />Jose Mourinho will not be able to field another midfielder Frank Lampard, who is also suspended as a result of accumulated card offenses.<br />