The Saudi Pro League and its teams have warned Premier League clubs they are coming after their top talents.
With the Middle Eastern nation spending nearly a billion on transfer fees in the summer, the spree is set to continue.
Karim Benzema, Neymar and Sadio Mane were the biggest names to sign in the summer, joining Cristiano Ronaldo.
Asked about winter recruitment by in-house media, head of recruitment Michael Emenalo said: "Whatever additional improvement that we need to do for any club, with time on our hands and preparation, we believe will be additions of the highest level.
"I'm hoping it's not very busy, because I think the job that was done has been quite interesting and aggressive, and most of the clubs, I believe, have what they need.
"And hopefully the attention will now turn to work within the training facilities to improve these players and to allow the time to adapt and perform.