Chelsea manager Antonio Conte believes the huge money being spent on players by Chinese clubs is a "danger for all teams in the world".
Blues midfielder Oscar, 25, is close to a £60m move to Chinese Super League club Shanghai SIPG in January and is expected to receive an estimated £400,000-a-week.
Conte said it would be "difficult" to manage a player on such a high salary.
Chinese clubs spent £200m before the start of the 2016 season.
The transfer record was broken three times in 10 days, as Jiangsu Suning spent £38.