Rangers strengthened their Scottish Championship title quest by bringing in five loan players from Newcastle before the transfer deadline on Monday night.
Newcastle owner Mike Ashley owns 10 percent of Rangers and last week the club accepted a 10 million-pound loan for the Sports Direct founder.
The loan moves are likely to be the subject of scrutiny when Newcastle owner Mike Ashley faces a Scottish Football Association judicial panel over his interests in both clubs on March 2.
Newcastle sent midfielders Shane Ferguson, Haris Vuckic and Gael Bigirimana to Rangers along with defenders Kevin Mbabu and Remie Streete for the rest of the season.
Ferguson, 23, has 18 caps for Northern Ireland and gained the most match experience at Newcastle, scoring three times in 32 appearances.
Bigirimana, 21, has made 23 appearances with Newcastle. Vuckic, 22, is a Slovenia international, who has also played on loan at Cardiff and Rotherham.
Streete, 20, played on loan at Port Vale earlier this season, while Mbabu, 19, is a Swiss youth international.