Watford manager Walter Mazzarri has left Nigeria national-teamer Odion Ighalo out of his 18-man squad for the trip to The Den, where they tackle Millwall in the fourth round of the Emirates FA Cup.<br /><br />As previously reported by <b>allnigeriasoccer.com</b>, the Italian gaffer is only being cautious as he doesn<span class="body1">&rsquo;t want the striker to pick up an injury before completing his transfer to a mysterious Chinese Super League team.<br /><br />At the moment, Ighalo is patiently waiting in London, with Watford and the team from China yet to agree a transfer fee.<br /><br />There is no place in the squad for former Nigeria U20 international Isaac Success, who is still recovering from a hamstring complaint, while Italy international of Nigerian descent Stefano Okaka will lead the Hornets frontline.<br /><br /><b>Watford Starting XI</b> : Pantilimon (GK); Mariappa, Kaboul, Britos; Dj&eacute;dj&eacute;, Doucour&eacute;, Watson (c), Guedioura, Mason; Okaka, Sinclair<br /><br /><b>Substitutes</b> : Gomes (GK), Pr&ouml;dl, Cathcart, Janmaat, Capoue, Cleverley, Deeney.<br /><br />Ifeanyi Emmanuel&nbsp; <br /></span>