Ahead of a potential move in the January transfer window, former Nigeria youth international Emmanuel Sarki has started tests in Poland with Wisła Krak&oacute;w , informs <i>sport.pl.</i><br /><br />Sarki appeared in training on Thursday and will be offered a contract by <i>The White Star</i> if he impresses coach Tomasz Kulawik at the end of tests.<br /><br />In the past, Sarki was regarded as one of Nigeria's most promising youngsters. While his pal John Obi Mikel is now a successful footballer with Chelsea, he did not play an official game for the European champions and had to be offloaded.<br /><br />He later joined MS Ashdod where he showed glimpses of his form as a teenager, and that made Belgian club Waasland-Beveren to offer him a contract after spending only one season in Israel. However, at the end of the 2011 - 2012 campaign, he declined to extend his contract and thus became a free agent.<br /><br />This summer, he trialed at Danish club Brondby but nothing came out of the tests.<br />