Rangers reject Sochaux bid for Edu
The French club revealed yesterday the USA midfielder is high on their wanted list this month.
However, McCoist insists they are nowhere near matching the Scottish champions' valuation of the player.
"I genuinely don't know [if they will come back in]. What I would say is the bid that they put in was so far away that I would be very surprised if they came back in."
McCoist is also determined to retain the services of Sasa Papac, following reports the left-back is set to quit Ibrox when his contract expires at the end of the season.
He said: "I was disappointed to hear that and I won't let that go without a fight. Sasa has been here for a good number of years now and he is just a top player, a very, very good footballer.
"I don't want to be in the business of not retaining the services of good footballers. I would hope we could talk him into staying. He has only signed for a year and I'm aware that we will have to get moving on that one."