&nbsp;FC Krylia Sovetov Samara striker Jerry Mbakogu is doubtful for his team<span>&rsquo;s Russian Premier League tie away to Rubin Kazan on Saturday. <br /><br />Manager Franky Vercauteren has informed via the official website that their Nigerian player has minor health problems and it remains unclear when he would return to full fitness. <br /><br />Mbakogu joined </span>Krylia Sovetov Samara on a season-long loan deal from Italian club Carpi in the summer transfer window.<br /><br />The 24-year-old has been involved in the last six games contested by his temporary employer in the Russian top-flight, logging 401 minutes. <br /><br />Igho Kingsley <br /><br />Photo Credit : kc-camapa.ru