Club co-owner Jorge Mas posted a picture of himself with the 32-year-old at Miami international airport and an official announcement confirming his move was said to be imminent.
The 31-year-old, who joined Internacional from Ceara in January, is the competition's top scorer this campaign with eight goals in nine league matches.
Eight minutes after the halftime break, the Brazilian's through ball found Fei Nanduo in the middle of the box, who fired a powerful shot to double the lead for Guangzhou.
Despite having the majority of the ball, Zall failed to make an impact as Cote d'Ivoire striker Jean Evrard Kouassi and Dong both squandered chances to level the game.
"My right eye was uncomfortable before the game, and I was influenced by that when I played. I was not in form today, but Ren played well," said the world No. 5 Chen.
Messi last week said he'd stay, but made it clear he was unhappy with both club President, Jose Maria Bartomeu, and the failure to develop a balanced squad and he could be an awkward dressing room presence for the new coach.
The truncated 2020 CSL campaign saw 16 teams split into two groups, each group of eight teams to be based in the same hotel, to play a tournament style league behind closed doors. Enditem
A brand new format will be taken over five days of competition action, and innovative scoring methods will be implemented.
"I thank Flamengo. They did everything to make me stay, but they understood me. I'm 35 years old, my career is ending and this is almost certainly going to be my last contract."
"In view of the logistics in coordinating the five zones of the AFC Cup and completing the Inter Zone matches, the AFC executive committee also agreed that the pandemic created complexities which constituted a force majeure event and, with sadness, led to the cancellation of the 2020 competition," it said.
Among changes are the AFC Champions League East Zone matches, which had been planned to restart in Mid-October, are now scheduled to be played between November 15 and December 13, AFC said after its Executive Committee meeting.