By ESPNSTAR.com staff
France are currently top of Group I with maximum points from their opening two games, although the Spanish are just three points behind having played one game less.
Given next Tuesday's match at the Estadio Vicente Calderon is likely to be decisive in determining which side qualifies as group winners, many have criticised the FFF (French Football Federation) for organising a friendly against Japan to warm up for a game against the current world and European champions.
Nonetheless, Deschamps insists there is plenty of value in Friday's game as he expects the Blue Samurai to pose a challenge, and is also hoping to give some of his fringe players a chance to impress.
"The objective is always the same: to achieve the best possible result before Tuesday's game against Spain," he said.
"A friendly must be take seriously. I do not want us to discard this match. The best way to prepare for Spain is to do things right on Friday.
"Japan have a lot of quality and experience. Some of my players may be given more playing time than in previous selections. I can also deduce more information about my team.
"Some [players] have been very busy these past few weeks. I must allocate playing time for this friendly match accordingly."
Following Friday's game, Japan take on Brazil in another friendly next Tuesday, before resuming their 2014 World Cup qualifying campaign in November with a game against Oman.