New Bolton Wanderers boss Owen Coyle has revealed he worked under a transfer embargo at Burnley when he first took charge.
Coyle admits he left Turf Moor frustrated by Burnley's prudent approach regarding potential new signings.
Coyle said: "When I came into the job at Burnley I was probably in the bottom three in terms of salaries in the Championship.
"It did not faze me because money has never been my motivation. If I had wanted money I would have taken the Celtic job and trebled, maybe even quadrupled my salary.
"The people at Burnley knew that. They knew I was ambitious. Managers do one or two things. They do well or they don't. If they don't they lose their jobs.
"Anyone who knows me is aware I put my heart and soul into that job and left no stone unturned.
"There were financial restraints and an embargo placed last January, which meant I could not bring a player in. No-one was aware of that, not even my staff. I kept that to myself and got on with it.
"Yes, I have disappointed a lot of people by leaving the club, I accept that, but I can look at myself in the mirror and know I conducted myself right in the right manner."