Meanwhile, Raskin has been consistently linked with a move away from Glasgow after impressing during the World Cup, but Besiktas’ offer was rejected.
The 25-year-old has missed Rangers’ past two matches amid transfer speculation, but manager Derek McInnes insisted Raskin has been “good as gold” during that period.
“Until an offer comes in that the club need to consider, Nico just has to knuckle down and train,” McInnes said earlier this week.
“I’ve no doubts that, if the window closes and Nico’s still a Rangers player, he’ll give brilliant service as he’s done previously.
“He’s getting interest because he’s a good player. I want to work with good players. We just needs to wait and see how things develop.”