The 33-year-old has long been linked with a return to Ibrox, with Ally McCoist looking to rebuild the Glasgow outfit after their much-publicised financial struggles.
Miller would add vital experience to their ranks, as well as a keen eye for goal.
He is, however, tied to MLS side the Vancouver Whitecaps until July.
No extension has been discussed in Canada, though, and Miller admits he would be willing to consider another stint at Rangers if the opportunity arises.
The former Scotland international - who has previously turned out for Rangers between 2000-2001 and 2008-2011 - said in the Daily Record: "I would definitely fancy going back to Rangers.
"It's something that has been talked about this year. It is a fantastic club. I had the most enjoyable spell of my career there.
"The place will always be close to me so it would be great to go back and play another time.
"I'm contracted until 30th June with Vancouver so until I'm told otherwise I will be heading back on a flight round about 20th January.
"The summer is another matter. If nothing happens in terms of extensions and things then I will be looking for work elsewhere."