John Obi Mikel is not writing off Chelsea&rsquo;s chances of advancing to the quarterfinals of the UEFA Champions League despite the Londoners suffering a 2-1 loss at the hands of PSG on Tuesday night.<br /><br />The Nigeria international admitted that he had to foul Lucas Moura because he was approaching Chelsea&rsquo;s&nbsp; penalty box.<br /><br />&ldquo;I had to fall in because he was going deeper and deeper into our 18-yard box,&rdquo; Mikel told reporters. <br /><br />&ldquo;I had to, if not get the ball,&nbsp; foul him, which I did. And then the free kick as well just skipped off my feet and went into the back of the net.<br /><br />&ldquo;But we came back strong as well, but we&rsquo;re very disappointed to have lost the game.&rdquo;<br /><br />The Chelsea number twelve added : &ldquo;We know they&rsquo;re a very good team. Our aim was to come out here and get a goal and we&rsquo;ve done that tonight. <br /><br />&ldquo;We still have the second leg to play back home, so we have to take that back home and capitalise on that and make sure we build on that.&rdquo;<br /><br />The 28-year-old Mikel played his 58th game in the Champions League against the French opponents.<br /><br />Photo Credit : chelseafc.com<br />