"We have done really, really well, we have improved and this match will be a good test for us", Mikel said.
"We're faced with the Champions League, Copa del Rey, LaLiga and national team friendlies, travelling.so it's hard".
"Apart from putting together excellent arrangements for our games at home, they ensured we travelled in comfort to all our away games".
Nigeria won four games and drew two to finish top of their group in what was labelled "Group of Death".
The German has qualified the Super Eagles for the World Cup with little fuss, and from a group that really should have been much more testing in its scrutiny of the eventual qualifier.
"Now we can not rest on our oars because there is a bigger challenge ahead of us".
The Super Eagles lock horns with La Albiceleste in the Krasnodar Stadium in preparation for the quadrennial showpiece in Russian Federation next year.
"The ideal thing would be to try and arrive at the World Cup in the best fashion possible without putting aside what all of us are playing for with our clubs".
In a video posted on the NFF Twitter handle, Idowu said: "It's a big privilege for me to be part of this great squad".
As experience has shown over the years, the Super Eagles have always been victims of poor management, in-fighting and technical lacuna at the global fiesta.These must be addressed. "This is I'm here to learn but I'm also ready to do my best if given the opportunity to do so".
Nigeria scored 12 goals in their six qualification games, and their detractors had no answer as they progressed in style.