The Flying Eagles will play their final test match this afternoon against Freiburg U23 team.
The match will be played in Freiburg and kick-off time is 3pm local time.
The Nigeria U20 team have won their first two training matches convincingly – they trounced Hoffenheim U23 5-2 and dismissed Nurnberg U19 side 5-0.
Freiburg second team are widely believed will offer the sternest test for the African champions.
“I am looking forward to a tough game after what I have been told about the Freiburg second team,” said assistant coach Nduka Ugbade.
The Flying Eagles have been preparing in Germany for the past two weeks ahead of the FIFA U20 World Cup, which begins on May 30 in New Zealand.