After selling Ivan Rakitic to Sevilla, Barca are currently looking to sell striker Luis Suarez, with Juventus a possible destination, while Arturo Vidal is close to joining Inter Milan.
Behind Bayern's attitude stands the intention to map the team's hierarchy in the player's salary.
In the other game played on Wednesday in the Suzhou division, Tianjin Teda held a 1-1 draw with Shijiazhuang Ever Bright. Frank Acheampong's header put Teda ahead in the 70th minute, but Chen Pu helped Shijiazhung level up in nine minutes.
The Foals responded but neither Stefan Lainer nor Lars Stindl was able to overcome Burki before the half-time whistle.
Despite Thursday's result, Flamengo are second in their Libertadores group with six points from three matches but with a negative goal difference. The Rubronegro remained in Ecuador after the clash in Quito to prepare for Tuesday's fixture against Barcelona SC in the Pacific port city of Guayaquil.
Hoffenheim also started the Bundesliga season off with a victory after they overpowered Cologne 3-2 thank's to Kramaric's hattrick.
Bayern chairman Karl-Heinz Rummenigge sees BVB as being the club's most dangerous rivals this season. "They have had a much longer break and preparation," the 64-year-old said.
The former Racing Club playmaker also revealed the reason for his move to La Liga.
The Brunei football governing body has also announced the cancellation of the under-16 and under-19 tournaments as players need to re-adjust with their studies after the 86-day school closure due to COVID-19.
"We had two big chances in the first half but Dortmund were more effective and clinical in front of the target today," Monchengladbach head coach Rose said.
The win was a relief for the German coach and the struggling defending champions as they have scored only one goal in the opening three games, which was the worst record for the capital club since the 1984-1985 season.