The transfer window closes on October 5 and Koeman admitted he would like to see another central defender arrive before then.
Inter were three goals up in the 28th minute as Lukaku bagged his second after Roberto Gagliardini had smashed in a volley.
The match between Sinner and Goffin was the first match under the new roof on Court Philippe-Chatrier, as the first day of this year's French Open turned out to be a stormy one.
They will always be a threat from set pieces as Kike Garcia showed in their goal, but unless things improve fast it could be a difficult campaign in Ipurua. Enditem
According to the schedule, Guoan will continue to be in the Suzhou division and compete with seven other clubs for the CSL championship this year. Its first opponent is Shandong Luneng, who ranked third in the Dalian division in the first stage. As the second phase of the CSL adopts a two-round knockout system, the two sides will start their first fight on October 17.
Several of those who tested positive for the virus have since recovered and Flamengo were able to begin Wednesday's match with seven of their usual starters.
Liang Jiamei started Jiangsu's attack with a three-pointer, followed by Xu Chenyan's second-chance basket. Jiangsu began to take charge of the game midway through the first quarter.
Fernando opened the scoring for Guoan in the 17th minute, as he sent Zhang Yuning's pinpoint through ball into the top-left corner.
The 16-team CSL was split into two groups respectively in Dalian and Suzhou. Both groups will play 14 rounds in the first phase, which is to end next Monday.
However, unlike Bottas and Verstappen, Hamilton started the race on soft compound tyres and had to come in to change them sooner than he would have liked, while Bottas and Verstappen were able to go much deeper into the race on their medium compound rubber.
"I am available. I would be lying if I said Schalke's future leaves me cold," he said.