Brazil took the lead on 23 minutes when Richarlison flicked on a Neymar corner that deflected into Marquinhos's path inside the six-yard box, allowing the centre-back to bundle home.
"We are against organizing the Copa America, but we will never say no to the Brazilian national team," the players said in a joint statement on social media.
But even so "Nike ended its relationship with the athlete because he refused to cooperate in a good faith investigation of credible allegations of wrongdoing by an employee."
The 29-year-old Neymar, who joined PSG in 2017 from Spanish club Barcelona for a record transfer fee of 222 million euros ($270 million), has agreed a deal French media reported will earn him an annual salary of 30 million euros.
"I'm very happy to be extending my contract with Paris until 2025," Neymar told.
For all their injuries, their starting line-up was still impressive, and with Thomas Mueller leading from the front and co-ordinating their suffocating press, Bayern took the game to their hosts.
Neymar picked up the injury in the previous round against Caen on Feb. 10 and the French champions initially said he would be out for action for "up to four weeks".
"Neymar is back to collective training while continuing his individual programme," PSG said in a statement.
The Catalans pulled off one of the greatest comebacks in the history of the competition by beating PSG 6-1 in a last-16 second leg in 2017 to progress after losing the first leg 4-0.