News of the transfer comes in the wake of Manchester City's 5-2 thrashing at home to Leicester City in the Premier League on Sunday afternoon. The game is the first time a side coached by Pep Guardiola has conceded five goals at home and once again served to highlight the problems at the heart of his side's defense.
Midfielder Unai Lopez scored twice as Athletic Club Bilbao won 2-1 away to Eibar.
Rumors speak of former Augsburg coach Manuel Baum of possibly taking over as the new head coach.
Dortmund responded with furious attacks but Gikiewicz was alert enough to keep out promising chances from Thomas Meunier and Erling Haaland before the break.
"I am going to be extra careful hitting a tennis ball around the court. That's something that is obviously staying in my mind after what happened in New York," Djokovic said in a press conference before the French Open.
The other two German participants - RB Leipzig and Borussia Monchengladbach - have harder tasks in Groups F and B respectively.
"We haven't played an official game for a long time, so players were kind of excited, and we transferred a lot of positive energy on the court," Shandong coach Luka Sjekloca noted.
Despite the loss, Shanghai is still secure atop the Suzhou division.
The second half was always going to be an anti-climax after the first 45 minutes, especially as there is another round of matches this week, but it allowed Koeman to bring Ousmane Dembele back for his first match in months after injury and allow new signings Francisco Trincao, Pedri and Miralem Pjanic to make their first team debuts. Enditem
AFC general secretary Windsor John said the change reflects the new stature of the competitions and will produce significant benefits for the body and its member associations.
The game was played behind closed doors at the Menorah Mivtachim Arena in the coastal city of Tel Aviv.