The beautiful game

A boy makes an overhead kick at a slum in Rio de Janeiro, May 2, 2014. REUTERS/Pilar Olivares

Children play soccer in the Vila Autodromo slum in Rio de Janeiro, Brazil, July 28, 2015. REUTERS/Ricardo Moraes

Street seller David Garcia plays with a soccer ball with his friends Luis Enrique who is attending military service, and Yaciel Concepcion, who is a physics teacher, in downtown Havana, March 5, 2015. REUTERS/Alexandre Meneghini

Youths play soccer in an empty swimming pool at a park in Havana, March 13, 2015. REUTERS/Alexandre Meneghini

Migrants play soccer amidst shipping containers converted into homes at a state-run shelter near Calais, northern France, February 21, 2016. REUTERS/Pascal Rossignol

Boys play soccer at the yard of a school sheltering people displaced by Saudi-led air strikes on Yemen's northwestern province of Saada, in the capital Sanaa May 27, 2015. REUTERS/Khaled Abdullah

Rohingya migrants, who arrived in Indonesia by boat, plays soccer during sunset inside a temporary compound for refugees in Kuala Cangkoi village in Lhoksukon, Indonesia's Aceh Province May 17, 2015. REUTERS/Beawiharta

Internally displaced people play football in a school in Sanaa, Yemen May 17, 2015. REUTERS/Mohamed al-Sayaghi

A group of boys play soccer at the edge of the surf at Copacabana Beach in Rio de Janeiro, December 11, 2012. REUTERS/Gary Hershorn

Maicon de Jesus Dias throws a ball he recovered from an open grave while playing soccer in a makeshift field in a local cemetery of the city of Una, Bahia state, Brazil, April 29, 2014. REUTERS/Roosevelt Cassio

A boy stands as a goal keeper as children play soccer on a road in Yangon, Myanmar, July 15, 2012. REUTERS/Soe Zeya Tun

Children play soccer in Huaycan shanty town in Lima, Peru, September 30, 2010. REUTERS/Enrique Castro-Mendivil

Youths play a soccer match in Johannesburg, June 22, 2010. REUTERS/Christian Charisius

A child plays with a soccer ball on a street in Soweto, South Africa's oldest township, November 23, 2008. REUTERS/Radu Sigheti

Children play soccer during sunset at a beach in Lima, Peru, December 26, 2008. REUTERS/Enrique Castro-Mendivil

Children play soccer at a beach in the east coast state of Terengganu, Malaysia, February 15, 2008. REUTERS/Zainal Abd Halim

A boy tumbles as he plays soccer on the streets of the Khayelitsha township in Cape Town, December 3, 2009. REUTERS/Kai Pfaffenbach

Afghan boys play soccer along a road in Kabul, November 16, 2009. REUTERS/Jerry Lampen

A Palestinian boy kicks a ball by a section of the Israeli controversial barrier in Aida refugee camp in the West Bank town of Bethlehem, September 19, 2009. REUTERS/Yannis Behrakis

An Angolan youth plays soccer in the streets of the capital Luanda, January 30, 2010. REUTERS/Rafael Marchante

Children play soccer on the street outside their small shack in Cape Town's Khayelitsha township, February 23, 2010. REUTERS/Finbarr O'Reilly

Players of the all female '113' soccer team take part in a training session in Cabinda, Angola, January 22, 2010. REUTERS/Rafael Marchante

Residents walk near a soccer goal post on Copacabana beach after heavy rains in Rio de Janeiro, April 10, 2010. REUTERS/Sergio Moraes

Children play soccer in the Eersterust neighborhood of Pretoria, South Africa, July 1, 2010. REUTERS/Brian Snyder

Mozambican youth play soccer in a suburb in Maputo, Mozambique, May 16, 2010. REUTERS/Grant Lee Neuenburg

A man holds a soccer ball at a beach by the shore of Nanay river in Iquitos, Peru, September 7, 2011. REUTERS/Pilar Olivares

Children, who live in the Cairo Necropolis, play soccer next to ancient tombs in Cairo, Egypt, September 13, 2015. REUTERS/Asmaa Waguih

A goalie makes a stop while playing soccer on an artificial turf after hours at an elementary school in the border town of San Ysidro, California September 2 2015. REUTERS/Mike Blake

Boys play soccer on a field of a school used as an electoral centre at the end of the presidential and legislative elections, in the mostly muslim PK5 neighbourhood of Bangui, Central African Republic, February 14, 2016. REUTERS/Siegfried Modola

Boys are pictured through a tire as they play soccer at a railway station camp, where refugees from South Sudan have stayed for four years, in Khartoum May 11, 2014. REUTERS/Mohamed Nureldin Abdallah

Five year-old Murtaza Ahmadi wears a shirt of Barcelona's star Lionel Messi made of a plastic bag as he plays soccer at the Afghan Football Federation headquarters in Kabul, Afghanistan February 2, 2016. REUTERS/Omar Sobhani