Nigeria might present a weakened side for tomorrow’s international friendly against Ghana in London after head coach Samson Siasia announced he will be without four players.The quartet include first choice goalkeeper Vincent Enyeama, Ehiosun Ekigho, Israel-based defender Efe Ambrose and Fengor Ogude, who is based in Norway who are without UK visas.Key players Mikel Obi and Peter Odemwingie are also doubtful for the side. The match will be played at the Vicarge Road Stadium in London.In the camp of the Black Stars, head coach Goran Stevanovic expects the full complement of his 20-man squad to report for camp later today for the tie.France-based Rabiu Mohammed is one of two newcomers likely to make their debuts.The midfielder played his first match in one of Europe’s major top flight when he came on as a second half substitute for newly-promoted French side Evian Thonon-Gaillard.The 2009 FIFA Under-20 World Cup winner told Joy Sports he’s ready for the challenge.