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"It is a big honour to play against Lionel Messi and the national team of Argentina," Neves, head of a nation with an approximate population of 525,000, told Argentina's Radio Mitre.
Cape Verde coach Bubista said Messi "is one of the best players in the world but we are playing against a whole team and not just against him."
Cape Verde are the biggest surprise at the World Cup in their debut, reaching the knockouts unbeaten with draws against European champions Spain (0-0), former champions Uruguay (2-2) and Saudi Arabia (0-0).
Title holders Argentina are the big favourites but Bubista pledged "we will play with courage and fight to reach the next round.
"The players should enjoy the match but they should stay focussed and do everything to advance. We know it won't be easy. But we must be courageous and not scared," Bubista said.
