The Chinese Super League (CSL) has been hit with another setback as one of its foreign players, Oscar, has left the team's training camp without permission.

According to reports, the Brazilian international was not present at the camp in Qingdao, which is where the CSL teams have been staying for their pre-season preparations ahead of the upcoming season.

The reason behind his absence remains unclear, but it is believed that he may have had issues with his teammates or coaches.

The departure of Oscar could be a major blow to the CSL, as he is one of the most talented players in the league and is known for his skill and leadership on the pitch.

However, the CSL can still move forward without him, as there are other foreign players who can step up and fill the void left by Oscar.

In addition, the CSL can also look to develop home-grown talent, as many of the league's best players come from China itself.

Overall, while the loss of Oscar is a disappointment, the CSL will need to find a way to adapt and continue to compete at a high level in the coming seasons.