Cooper signed for the Lions permanently last summer after a successful loan spell at the club during their promotion-winning 2016/17 season, but cost the club under £1 million after then-Reading manager Jaap Stam deemed Cooper surplus to requirements.
Sadiq, whose deal is subject to worldwide clearance and who claimed that, "in Nigeria I am compared to the legend Kanu and Emmanuel Adebayor", said: "It is very good to be here, it has been good so far and I can't wait to start".
"Rangers is a good team, I'd heard the name before Gerrard came in here".
"Gerrard told me about the team, the players, he said everyone will help me if I came here and he will help me go forward in my career, and you don't have to think twice when someone says that to you".
Jones snatches dramatic win in crash-filled Daytona race
Keselowski's No. 2 Ford slammed into the side of Busch, and more than a dozen cars were unable to slow down. After rookie William Byron took the lead, a wreck on the 57th didn't impact the front group.
He must now turn his attention to Thursday's Europa League qualifying match against Macedonian team FK Shkupi.
Allan McGregor, Jon Flanagan, Scott Arfield, Jamie Murphy, Connor Goldson, Nikola Katic and Ovie Ejaria all joined earlier in the window. He just asked me whether if I wanted to join his team or not and I said yes.
"I'm very happy to be here", Coulibaly, capped nine times for Mali, 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".