Steven Gerrard has been busy in the transfer market already this summer, as he looks to put together a squad which is capable of competing both domestically and in Europe in the upcoming season.
"Rangers are delighted to announce the signing of Umar Sadiq on a season-long loan from Roma, subject to worldwide clearance", read a statement on club website.
The 21-year-old Nigernian striker, who scored five times in 12 appearances during a loan spell at NAC Breda in the Eredivisie last season, planned to stay at his parent club before the lure of the former Liverpool and England captain enticed him to Glasgow.
He told Rangers TV: "It was not easy but when my agent said Gerrard is the head coach, I said okay no problem and was happy to come in".
But the 21-year-old Nigerian and Malian worldwide Coulibaly are both expected to be signed in time to be available for inclusion in the UEFA-registered Rangers squad for the meeting with the Macedonians.
"At the moment, he (Sadiq Umar) is still a Roma player but it has been well documented that I am a fan, but it's just a case of watch this space", Gerrard told reporters on Saturday evening.
He must now turn his attention to Thursday's Europa League qualifying match against Macedonian team FK Shkupi.
Coulibaly may be followed through the entrance at Ibrox very soon with the club said to be confident of securing a season-long loan move for Roma forward Umar Sadiq.
"He asked me if I wanted to join his team, and I said yes, although I was anxious it wasn't actually Gerrard (on the phone)!" the Malian said.
He smiled: "I don't like to say anything about myself but I am a hardworking player who always wants to help the team".