Philippe Coutinho also has a lot to prove after his loan spell at Bayern, while questions remain over what style of play Koeman will look to impose.
The players are due to be tested again on Monday before a decision was made about their availability for the match.
Zhang Changning (3rd L) of Jiangsu celebrates during the Group A match between Jiangsu and Tianjin at the 2020 Chinese Women's Volleyball Championship in Jiangmen, south China's Guangdong Province, on Sept. 26, 2020. (Xinhua/Qin Lang)
Potential successors for Wagner don't seem to be queuing up at the outfit's headquarters, but there may well be a new coach installed if the run of defeats continues.
The only down side for the capital-based team was that Renato Augusto limped off with an injury and the Brazilian is suspected of suffering a muscular problem.
"You deserved a farewell befitting who you are: one of the most important players in the history of the club, achieving great things for the team and on an individual level," commented Messi on social media.
Dalian Pro and Guangzhou R&F are tied with 11 points, ranking sixth and seventh respectively with three games left in the Suzhou division before the match. Both sides need a victory to keep their hope alive of finishing among the top four.
Crystal Palace's win at Old Trafford means they are one of five teams with six points from two games and they will face another team with a perfect start when Everton visit Selhurst Park on Saturday afternoon. The game sees the side with the best pass completion numbers in the Premier League (Everton 88.3 percent) against Palace, who have the worst a pass completion rate (56.4 percent), so it's probably fair to say we can expect a contrast in styles.
The South American zone World Cup qualifiers were originally scheduled to begin in late March but were suspended because of the coronavirus pandemic.
As a result, the team decided to go on strike to express its solidarity with Szalai, who is highly respected among fans and staff.
The pay-tv stations covering the game, Sky and DZAN, announced they would not be sending reporters to Budapest but instead would commentate on the game from Germany.