Premier League clubs are to vote on a temporary ban stopping teams from loaning players from clubs under the same ownership in January.
The measure would block Newcastle from signing players from clubs also owned by Saudi Arabia's Public Investment Fund (PIF).
It comes amid rumours Newcastle want to sign former Wolves captain Ruben Neves from Saudi Pro League side Al-Hilal.
Clubs will vote at a shareholders meeting on 21 November.
A potential January move by the Magpies for 26-year-old Neves - who joined Al-Hilal for £47m in June - could help plug the midfield gap created by Sandro Tonali's 10-month ban for breaching betting rules.
The temporary rule - which must be voted for by 14 of the 20 Premier League clubs to be implemented - would only apply to incoming loans, not outgoing.
It would therefore not have affected Brighton sending Kaoru Mitoma on loan to Belgian club Union Saint-Gilloise as they did in 2021. Brighton owner and chairman Tony Bloom has a minority stake in Union SG.
The proposed measure would only be temporary until a concrete solution can be agreed in time for the summer transfer window.