According to the police, the players aged 12-15 were on their way back from a football registration exercise when the incident happened, with dozens of the footballers hospitalized. Enditem
"I spoke to him yesterday (Friday) before training; I think that the young players have to play regularly and that is what I told him," Koeman commented, adding that the same went for Carles Alena and new signing Pedri.
Mainz were unable to put up resistance but were lucky enough that Forsberg rattled only the woodwork in the 31st minute and Angelino hit the side netting from tight angle before the half time.
Sharjah's chances of progressing to the next round now hang on their ability to collect three points in the reverse fixture on Friday.
Gilbert Alvarez had given the hosts an early lead before Lucho Gonzalez equalized from the penalty spot.
Up to 20,000 fans will be allowed to enter the 79,000-capacity Maracana Stadium for Flamengo's home match against Athletico Paranaense in Brazil's Serie A on October 4.
Shenhua took the upper hand after Yang Xu converted a penalty on 47 minutes from Lu Lin's trip on Peng Xinli but R&F leveled in the 79th minute as Zhang Gong flicked in a cross from Chen Zhizhao.
Andre Villas-Boas' side beat PSG 1-0 last Sunday, ending a nine-year winless run against the old rivals, but suffered a bitter 2-0 defeat to St-Etienne on Thursday.
The 33-year-old point guard from the United States published a post on his personal social media account on Friday, which has been criticized for insulting Chinese women.
"We are excited to have agreed this partnership with Tencent, ensuring our supporters in China can enjoy following Premier League action throughout this season," said Premier League Chief Executive Richard Masters.
The playmaker had his contract with Gremio rescinded on Monday after publicly falling out with president Romildo Bolzan amid the club's poor start to the season and his own indifferent form.