The 25-year-old scored both goals for his team in their 2-0 defeat of Iceland on Friday.

"Musa made wonderful, fast attacks and scored these goals with his wonderful technique. I saw him in the training [at CSKA Moscow] and he was fighting to come back to the rhythm, working very hard. I hope that the confidence he has now will help all the team to make a good result tomorrow against Argentina," Rohr told journalists.

Nigeria, who have three points after playing two group-stage matches and are second in Group D, will face Argentina in St. Petersburg on Tuesday. The South American side are bottom of the group with just a point from their first two games.

The 2018 FIFA World Cup kicked off on June 14 and will continue until July 15, with the matches being played in 11 cities across Russia.