Steven Whittaker has rejected Rangers' latest contract offer amid ongoing speculation he is set to move to Bursaspor.
The utility player has been talking about a new deal with the Ibrox side since the end of last season, but as yet the two parties have been unable to reach an agreement.
Turkish side Bursaspor have so far failed in three bids for Whittaker, however, they could now return with a new offer.
Agent Ken Anderson told the Evening Times: "Rangers tabled a new and improved offer to increase Steven's contract beyond 2012.
"However, although they have upped the ante and the ground between us and them has closed it has still not closed enough and we have rejected that new offer.
"Rangers have not said if that will be their final offer to extend Steven's current contract so we will have to wait and see on that.
"But as it stands I expect Steven to see out the remaining 12 months of his deal with them as it is clear Rangers value the player very highly."