Nigeria defender, Efe Ambrose has voiced his belief in the African champions ahead of Sunday's 2013 Fifa Confederations Cup game against world and European champions, Spain.
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Nigeria need a win against La Furia Roja to stand a realistic chance of progressing to the semifinals of the competition as Uruguay are likely to defeat Tahiti in the other Group B game of the day.
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Spain have yet to lose in their last 27 matches but Ambrose believes that run can be snapped by the Super Eagles at the Estadio Castelao in Fortaleza on Sunday.
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The 24-year-old is drawing from his experience on November 7, 2012, when he helped Celtic stun FC Barcelona 2-1 in the Uefa Champions League at Celtic Park.
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"Barcelona are special, and so are Spain. But if we could beat Barca with Celtic, we can beat Spain with Nigeria," Ambrose told Fifa.com.
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Eight of Spain's 23 players currently in Brazil for the tournament are FC Barcelona players.
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Spain currently lead Group B of the Fifa Confederations Cup with six points from two games while Nigeria and South American champions, Uruguay have both amassed three points.
It would be very difficult though but I think it is very much possible. But Emenike and Victor Moses would have made our job easier.