The 59-year-old has promised to reveal sensational information next month when he faces trial for alleged match-fixing
The 59-year-old has been detained since July, but his long wait for a court case is due to end next month - a prospect he is relishing.
"I'm looking forward to the first hearing. With all my knowledge and documentation I'm waiting for the court case. Everybody should pay close attention to what I'm going to say," Yildirim said in a letter sent to TV8.
"On February 14, I'm going to shake up Turkey. I will disclose everything that nobody said or had the courage to say until today. Then everybody will reconsider everything."
Yildirim went on to state that he felt he has serviced Turkish football well in his career, but the ongoing saga is threatening to undo his good work.
"They want to finish off in five to six months what I have achieved in 13 years. I've put in great service for Turkish football.
"I spent €23 million out of my own pocket - I built a stadium and facilities, and I looked after 2000 amateur sportsmen.
"If I hadn't done all this and had used my money for transfers, we'd have been champions every year, not just for three."