Manchester United manager Jose Mourinho will have to adapt to the tactics of City coach Pep Guardiola in tomorrow<span class="body1">&rsquo;s derby.<br /><br />With Sergio Aguero suspended for the trip to Old Trafford, the Portuguese coach has suggested that his rival may decide to change his formation, with Nigeria international Kelechi Iheanacho among his options. <br /><br /></span><span class="body1"><span class="body1"><span class="body1"><span class="body1"><span class="body1"><span class="body1">&ldquo;</span></span></span></span></span>He could decide to play with Iheanacho or Sterling. He could decide to play with Silva as a fake no.9 between the lines,</span><span class="body1"><span class="body1"><span class="body1"><span class="body1"><span class="body1">&rsquo;&rsquo; said Mourinho to reporters during Friday</span></span></span></span></span><span class="body1"><span class="body1"><span class="body1"><span class="body1"><span class="body1"><span class="body1">&rsquo;s</span> press conference.<br /><br /></span></span></span></span></span><span class="body1"><span class="body1"><span class="body1"><span class="body1"><span class="body1"><span class="body1">&ldquo;</span></span></span></span></span>It is clear that they have many options. That for us, in the preparation of the game, makes us have to go step-by-step with every situation because we are trying to reduce the unpredictability of the game.</span><span class="body1"><span class="body1"><span class="body1"><span class="body1">&rsquo;&rsquo;<br /><br />Iheanacho, 19, was a non-playing substitute in the last meeting between the two teams at the Etihad Stadium, and appeared off the bench last October, replacing Bony with seven minutes remaining. <br /><br />He has not started a match in the Premier League so far this season. <br /><br />Igho Kingsley <br /><br />Photo Credit : mancity.com<br /></span></span></span></span>