When the buy-out was completed, Ferguson was contacted by an influential fans' group member and told he had to resign.
The Scot refused to comply and, speaking to Channel Four News, Ferguson said it had been the correct course of action.
"The Glazers are supportive. You always appreciate people who support you and they have been very good," said the Scot.
"Everything I have asked for they have delivered, and they supported the club in all the improvements they made.
"Look at the training ground today. It is probably the best training ground in Britain. That is down to the Glazers.
"They have produced the medical centre. It is absolutely fantastic.
"What can you do? (Staying) was the right thing to do."
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