Stage One involves 32 groups of four players, with the player who tops each group progressing to Stage Two.
"We are not the ones making the decisions," Flick said when reacting to UEFA's announcement to stick to their plans of allowing a crowd in the Puskas Arena.
Racing moved to second in Group F, three points behind leaders Nacional of Uruguay. Alianza Lima occupy last place, having failed to pick up a point from four matches.
The players are due to be tested again on Monday before a decision was made about their availability for the match.
Tianjin dominated the match with strong attacks from Chinese national team players Li Yingying and Wang Yuanyuan, while Hebei hardly created a threat in the first set.
Romania's Simona Halep, the winner of 2018 edition who arrives in Paris with her victory in the Italian Open this week, will seek for her third Grand Slam by facing Spain's Sara Sorribes Tormo. Enditem
Although both Li and Wang were substituted in the third set, Tianjin's young players Wang Yizhu and Chen Boya combined for 10 points to sail to the victory.
The match will be played at the Azteca stadium in Mexico City on September 30, starting at 9pm local time, according to an FMF statement.
But he has fallen out of favor under Atletico's current manager Jorge Sampaoli and has not played for the club since March.
Instead, goals were scored at the other end of the pitch, as Lucas Tousart's foul on Sebastian Rode allowed Daichi Kamada to curl the subsequent free-kick into the path of Bas Dost, who nodded home from close range in the 36th minute.
Roger Guedes and Graziano Pelle scored in the first half to seal the win which helps Shandong build an unassailable lead with 23 points in the Dalian group.