Nigeria's Joel Obi runs during the national soccer team's training session in Kaliningrad, Russia, June 15, 2018.

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Nigeria's Ahmed Musa, centre, reacts during the national soccer team's training session in Kaliningrad, Russia, June 15, 2018.

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Nigeria's Alex Iwobi, left, runs during the national soccer team's training session in Kaliningrad, Russia, June 15, 2018.

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Nigeria's Chidozie Awaziem runs during the national soccer team's training session in Kaliningrad, Russia, June 15, 2018.

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Nigeria's Alex Iwobi controls a ball during the national soccer team's training session in Kaliningrad, Russia, June 15, 2018.

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Nigeria's players run during the national soccer team's training session in Kaliningrad, Russia, June 15, 2018.

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Nigeria's John Obi Mikel and Francis Uzoho have fun during the national soccer team's training session in Kaliningrad, Russia, June 15, 2018.

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Nigeria's Tyronne Ebuehi heads a ball during the national soccer team's training session in Kaliningrad, Russia, June 15, 2018.

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Nigeria's Bryan Idowu heads a ball during the national soccer team's training session in Kaliningrad, Russia, June 15, 2018.

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Nigeria's Victor Moses reacts during the national soccer team's training session in Kaliningrad, Russia, June 15, 2018.

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Nigeria's Alex Iwobi reacts during the national soccer team's training session in Kaliningrad, Russia, June 15, 2018.

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Nigeria's Alex Iwobi reacts during the national soccer team's training session in Kaliningrad, Russia, June 15, 2018.

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Nigeria players run during the national soccer team's training session in Kaliningrad, Russia, June 15, 2018.

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