Belarusian Sabalenka got the better of American Keys in straight sets 6-4, 6-3 to move into the quarters of the event in Beijing on Wednesday.
The length of the former Paris Saint-Germain player's contract has not been specified but a source with knowledge of the matter told that he was expected to sign for two
It will be a ninth career semi-final at the Slams for the 26-year-old from Belarus.
CONCACAF and the Saudi Arabia's PIF have announced a partnership to further elevate football in North America, Central America and the Caribbean.
Erik ten Hag has his eyes set on "winning trophies" in the leagues and focused on player rotations to cover all the games.