Miller has emerged as a possible replacement for Kris Boyd, who will leave Ibrox when his contract expires at the end of next month.
The 27-year-old only moved to Teesside in January, but having failed to score in any of his ten appearances since leaving Aberdeen, the striker admits a change could appeal.
If Rangers ask the question, I would be forced to make the toughest decision of my career, said Miller. It is flattering to be linked with a club as big as Rangers. It is also nice to know clubs are taking a keen interest in what I am doing.
Meanwhile, Sunderland defender John Mensah has been confirmed in Ghana's World Cup squad.
Mensah, who has been on loan at the Stadium of Light from Lyon, has been included in the Black Stars' 23-man party despite concerns over a long-standing ligament strain that plagued him last season.
Fellow Sunderland defender Paulo Da Silva has been included in Paraguay's squad.
Source: Northern Echo
Source: Northern Echo