Jurgen Klopp urged world soccer governing body FIFA to look into Saudi Arabia's transfer window closing three weeks after Europe's, with the Liverpool boss fearing major European leagues will lose more players without being able to replace them.
The Premier League's transfer window closes on Sept. 1, the deadline for most of Europe's top leagues, but Saudi Pro League clubs can sign players until Sept. 20.
Liverpool has already seen three of its key players move to Saudi clubs, including skipper Jordan Henderson and fellow midfielder Fabinho, while striker Roberto Firmino moved on a free transfer.