Chinese Super League clubs will only be allowed to play three non-Chinese players per game in their next season - which begins in March.
A rule change has reduced the number of foreigners allowed in a move which could behind down the wave of big-money signings from Europe.
Chelsea striker Diego Costa has been linked with a move to China that would be worth £30m a year.[br]Previously the rule was "4+1" - four foreigners of any nationality plus one Asian player in a matchday squad.
Teams will now also be required to name two Chinese players aged under 23 in their matchday squads,with at least one in the starting XI, with the Chinese Football organization also looking into "signature fees and other illegal activities" in recent transfers.
Source: tert.am