Former Nottingham Forest manager Gary Megson says he had no option but to walk away from the club last month - even though it cost him £500,000.
Megson had 12 months left on his contract at the City Ground
Megson quit as boss in frustration with Forest four points away from the League One drop zone after just one win in 10.
He told the Daily Express: "I fell on my sword for the good of the club and it cost me a huge amount of money.
"I wanted to stay but I started to think I was the right man for the right club at the wrong time."
Megson says the job was far more difficult than he had imagined when he was installed by chairman Nigel Doughty in January 2005.
He added: "Before I took the job I spoke to two high-profile managers who both warned me against taking it.
"The job itself is fantastic and the chairman is one of the best I've ever worked for, he deserves success.
"But if I'd gone on loan to Forest for a month before becoming manager, I'd never have re-signed for a second month.
"What I saw from the first two weeks onwards was a real eye-opener. It was like I'd gatecrashed a private members' party."
Megson could not prevent Forest's relegation from the Championship and, despite spending £2m on new players, failed to spark a promotion challenge this time around.
But he says they are better prepared for success than when he arrived at the club.
"The job that I've had to do over the last 13 months was mostly distasteful work. I had to sort out discipline, move dead wood and stop the gravy train.
"I had to take the hard line with players that weren't there for the right reasons and break a huge clique that was causing untold problems.
"The clique is still there to a lesser extent but the managers that come in now will have less of the work I had to do. It's certainly getting better."