Tottenham Hotspur are closely monitoring the performance of Nigeria U20 international Musa Yahaya at Portuguese setup&nbsp; Portimonense SC, according to the the midfielder&rsquo;s intermediary Babawo Mohammed.<br /><br />Spurs failed to secure a work permit for the Flying Eagles dazzler after he attained the age of majority last December and he has been shipped out on loan to continue his development, having penned a pre-contract in 2014.<br /><br />&ldquo;Musa Yahaya is a player of Tottenham Hotspur, they want him to play at Portimonense until he gets a work permit,&rdquo; Babawo Mohammed told <b>allnigeriasoccer.com</b>. <br /><br />&ldquo;He has to play in a big league before he can get a permit. They are monitoring his performance and he is doing well. <br /><br />&ldquo;He has signed for Spurs and they are still paying him his allowances.&rdquo;<br /><br />In the January transfer window, the 18-year-old Musa Yahaya penned a six-month deal with Portimonense SC, who are challenging for promotion to the Primeira Liga.<br /><b><br />Ifeanyi Emmanuel</b><br />