Grayson, 42, sacked by Leeds in February and installed as Lee Clark's successor at Huddersfield less than three weeks later, said his loyalty as a manager could never be questioned and that he was now at a club who backed him to the hilt.
"I've been very loyal as a manager during my time, three years at Blackpool and three at Leeds and believe me during that period of time at Leeds I had the chance to go and manage a club in the Premier League, but didn't want to do that.
"I wanted to stay with the club that I had always supported and wanted to take the club forward. But (Huddersfield chairman) Dean (Hoyle) made a decision and I jumped at the chance to get back into work with him because I could sense we had a driving ambition to take a football club forward.
"He backed me in terms of the financial side of it, but he could see what I wanted to do as a manager and what I had done previously, how hard I work and how my teams have played and I think we've got a very good understanding and a good relationship.
"Everybody here is pulling in the same direction. You look at the training ground now, we're spending a lot of money on it and the team is progressing. I've got everybody here working with me to make this a successful football club."