All eyes will be on Nike's sales forecast for China as it reports quarterly numbers against the backdrop of calls to boycott global brands in the country for their comments on alleged human rights abuses in Xinjiang.

While overall results are expected to get a boost as Americans spend their stimulus checks on Air Max and Jordan sneakers, sales growth in China, Nike's fastest growing business with a roughly 20% share of the total revenue, has shown signs of slowing following the backlash.

Research firm Cowen's data showed that sales in China were weakening into June, and product sales on e-commerce platform Tmall declined as search trends for "guochao", Mandarin for homegrown fashion, gained popularity.

Earlier this year, Nike and rivals Adidas and H&M, faced heat on Chinese social media after internet users found statements the companies had made in the past on the use of forced labor in Xinjiang.

Nike has said it does not directly source cotton from the region and confirmed with its contract suppliers that they are not using textiles or spun yarn from the area.

"We could see near-term sales volatility in Greater China, the brunt of which is likely to be felt in the next 1 to 2 quarters," BTIG analyst Camilo Lyon said.

Nike reports results on 24 June.