A man waters plants in planter boxes on the 700 square metre (7500 square feet) rooftop of the Bon Marche, where the store's employees grow some 60 kinds of fruits and vegetables such as strawberries, zucchinis, mint and other herbs in their urban garden with a view of the capital in Paris, France, August 26, 2016. REUTERS/Regis Duvignau

A tomato plant is seen in among planter boxes on the 700 square metre (7500 square feet) rooftop of the Bon Marche, where the store's employees grow some 60 kinds of fruits and vegetables such as strawberries, zucchinis, mint and other herbs in their urban garden with a view of the capital in Paris, France, August 26, 2016. REUTERS/Regis Duvignau

Manchester City - Pep Guardiola Press Conference - City Football Academy - 8/7/16 Manchester City manager Pep Guardiola during the press conference REUTERS/ Phil Noble

2016 Rio Olympics - Athletics - Final - Men's Marathon - Sambodromo - Rio de Janeiro, Brazil - 21/08/2016. Feyisa Lilesa (ETH) of Ethiopia celebrates. REUTERS/Athit Perawongmetha

Football Soccer - Fenerbahce SK v Braga - Europa League - Round of 16 - Sukru Saracoglu Stadium, Istanbul, Turkey - 10/03/16 Fenerbahce SK's players celebrate after scoring a goal. REUTERS/Osman Orsal

2016 Rio Olympics - Tennis - Final - Women's Singles Bronze Medal Match - Olympic Tennis Centre - Rio de Janeiro, Brazil - 13/08/2016. Petra Kvitova (CZE) of Czech Republic celebrates after winning match against Madison Keys (USA) of USA. REUTERS/Toby Melville

Real Madrid's Cristiano Ronaldo of Portugal reacts as he receives the Best Player UEFA 2015/16 Award during the draw ceremony for the 2016/2017 Champions League Cup soccer competition at Monaco's Grimaldi in Monaco, August 25, 2016. REUTERS/Eric Gaillard

2016 Rio Olympics - Athletics - Victory Ceremony - Men's Marathon Victory Ceremony - Maracana Stadium - Rio de Janeiro, Brazil - 21/08/2016. Feyisa Lilesa (ETH) of Ethiopia poses with his silver medal. REUTERS/Stoyan Nenov