Sir Alex Ferguson has detailed how he worked the transfer market during his time in charge of Manchester United.

Speaking to the United's official website ahead of the release of his new documentary - Sir Alex Ferguson: Never Give In, the Scot outlined his approach to transfers.

"I believe in instinct. I had a good instinct about players and I had a good instinct about watching players who I maybe wanted to buy.

"I knew that, looking at certain players, I could see traits that told me they were Manchester United players, or Aberdeen players, or St Mirren players. I could see that in certain players I watched. Instinct was really important."

Ferguson says he never became bored in the job.

"Listen, I could encapsulate it in this way. If I'm going to walk into the training ground at Carrington as the manager of Manchester United, and I look out on that football field and I see this fantastic training ground, why wouldn't I want to go in there every day? The only way you can do that is being successful.

"So, being bored? I was never bored in my life, about anything."