<b>Allnigeriasoccer.com</b> understands that a couple of big teams based in Portugal and Germany are keeping tabs on AS Trenč&iacute;n exciting winger Samuel Kalu,18. <br /><br />The suitors made enquiries about his availability in the summer transfer market, after he put himself in the shop window during the second half of last season.<br /><br />But the sticky point is that AS Trenč&iacute;n as well as his representatives are unlikely to let him leave Slovakia this summer as they want him to continue his development. <br /><br />Kalu has been described as a pacy winger, good dribbler who contributes his own share of goals.<br /><br />The teenager has been compared to KAA Gent&rsquo;s Nigeria international Moses Simon, who played for Trencin before transferring to Belgium.<br /><br />Ifeanyi Emmanuel <br />