Reading have agreed a £150,000 fee with the Millmoor side for the 29-year-old's services, however, it has emerged that the deal is potentially on the verge of collapse as the Millers don't have the financial clout to match Butler's excessive pay demands.
If a deal cannot be reached, Rotherham boss Ronnie Moore has suggested that he will have no hesitation in taking his money elsewhere.
"We've been interested in him for a while. We agreed a fee, but the agent has come in and we are a million miles away at the moment," said Moore speaking to Ananova.
"We can't offer the wages he wants and if the agent carries on like he is, we will look for someone else. I'm not going to hang about. It's vital we get another player in and I'd like to bring someone in by the weekend if I can."
The Millers are desperate to sign another forward and bolster their striking options having flogged Irish sensation Alan Lee to Cardiff for a massive £850,000.
History offers no signs of reassurance for those wishing to push the deal through. Butler has previously rejected moves to Stoke, Preston, Bristol City and Busan Icons in favour of remaining with Reading.
Interestingly, Martin Butler has the same agent as ex-Reading striker Jamie Cureton. The agent this summer engineered a bosman move for Curo to South Korean side Busan Icons, guaranteeing the tricky frontman a mega tax free pay packet.
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