Nigeria coach Gernot Rohr has said he will try out new tactics and formations when the Super Eagles take on fellow World Cup qualifiers Poland and Serbia later this month.
The Eagles face Poland on March 23 and four days later, they tackle Serbia in London.
“I hope to try different systems (in these matches), so we can change when necessary,” Rohr said.
“We have played 4-3-3, 5-3-2 already.