Real Betis defender A&iuml;ssa Mandi has been labelled as the culprit for the second goal conceded by the Algerian national team in their 3-1 loss to Nigeria on Saturday. <br /><br />Chelsea midfielder Mikel wasn&rsquo;t offside when the ball was delivered to him by Etebo because Mandi was marginally ahead of him after a&nbsp; poorly-executed offside trap.<br /><br />&ldquo;We are not going to lie, the mission promises to be difficult because the fate of Algeria is no longer in its hands. <br /><br />&ldquo;Also, on the action of Mandi who eliminated the offside and it&rsquo;s really serious to commit this kind of defensive error at such a level, &rdquo; retired Algeria international Tahar Ch&eacute;rif El-Ouazzani told Le Buteur.<br /><br />&ldquo;But here I think it is necessary to review the defensive system of the national team. <br /><br />&ldquo;I think it was necessary to strengthen the defense and play with three central backs as was done with Cheikh Sa&acirc;dane.&rdquo;<br /><br />Algeria will face the Zambian national team, who are third in the standings, in their next two World Cup qualifiers. <br /><br />Igho Kingsley <br /><br />