"I just get my head down and play.
"There was a contract for me on the table and I rejected it and that's where we stand.
"If I'm playing well then hopefully everything will get ironed out. These things come up when a player enters his last year and you just accept it."
Miller has made a great start to the new campaign, with five goals to his name, and boss Walter Smith revealed last month that a second offer had been made to keep the player at Ibrox.
"We had it with big Boydie last year," added Miller. "Whether he was going to sign or whether he was going to go.
"I've not said anything. I'm just enjoying my football and looking forward to scoring more goals.
"We've lost a lot of goals with Boydie gone and I've got off to a decent start, getting five in the first three games.
"If I can score as many as Boydie did over the last four years, I'll be really happy.
"But as long as I'm contributing towards the team, I'm happy."