The Black Stars will begin preparations on Tuesday morning for three crucial assignments starting with a friendly international against Uganda on 30 May.Head coach Milovan Rajevac will however be without several of his key players as they are yet to arrive in the country.Bernard Yao Kumordzi from Panionios FC, Greece, Ernest Papa Arko, South Africa-based duo Jonathan Mensah and Jonathan Quartey are the only foreign-based players likely to train with the team at the El-Wak Stadium.The Black Stars engage Mali and Sudan in decisive joint 2010 Nations Cup/World Cup qualifiers next month.Source: Ghanasoccernet