Rangers manager Ally McCoist believes Nikica Jelavic demonstrated his value by scoring twice to secure a 2-0 win over Hibernian.
McCoist also insists the decision will be down to the Croatia international if he attracts interest in January.
"I would imagine we will be having this conversation for the next three or four weeks," said McCoist.
"Jelavic showed today just how important he is to our football club. That's the way it is."
Jelavic's second-half double gave Scottish Premier League leaders Rangers a win at Easter Road to maintain their four-point lead at the top of the table.
The Croatian scored from the spot on 61 minutes after Michael Hart had fouled Lee Wallace, then Hart was also at fault as Jelavic headed the second eight minutes later.
"I thought Nikica played well for us today in what was a really tough ask against Hibs' best players," said McCoist.
"I thought their central defenders defended really well today."
Rangers were without the suspended Sone Aluko, who was banned this week after being found guilty of diving, while Kyle Lafferty missed out with a back problem.
"We definitely need to have a bit of creativity in the team because we have players like Jelavic who can score goals and will score goals," said McCoist.
"You do miss guys like Aluko and Steven Naismith and Kyle Lafferty. All these guys are capable of creating and scoring.
"We asked other boys to come in and do it and we got by today and it was really pleasing."