Wood left his job at United to take the manager's job at League Two Salford, though was axed after 18 months in charge.
He told the Manchester Evening News: "Gary Neville said it was the best football he had ever seen at Salford and Giggsy used to watch training every day and he said he would have loved to be playing in every training session.
"It is a results business but I am pretty sure if I had stayed we would have been fine. For me, it needed a bit of patience.
"The first season was really successful. The owners asked me to create a playing style, bring the culture of the club together and improve the players and the team, which is exactly what I did. We got to the play off semi-final against Stockport (losing on penalties).
"I had spent a year building a playing style and in the second year I wanted to build on it. But some players were brought in that didn't fit the style.
"At the time (Gary) Neville was CEO but then he stepped back and Nicky Butt took over and then Ryan Giggs came in as sporting director. They were always around, and in a supportive way. But they all see the game differently, there were all different types of players so it is only normal to like different things in different players. That was the challenge. Sometimes you were stuck in the middle."
Since leaving Salford, Wood has been working as assistant to Dwight Yorke with the Trinidad & Tobago national team.