Van Nistelrooy, who is preparing for a match against Chelsea on Sunday, sought advice from his former mentor, Ferguson, before facing Leicester.
The former player, who had a falling out with Ferguson that led to his exit from Manchester United in 2006, has since reconciled with the iconic manager.
Van Nistelrooy said, "I did speak with him, and he wished me well. We discussed my current situation and the team's status."
"His primary message was well wishes. It's always a pleasure to have a conversation with him."
When asked if he ever envisioned returning to Manchester United in such a capacity after his departure, the Dutchman responded, "No, at that time, management wasn't on my mind."
"I left for Real Madrid in 2006 to continue performing at the highest level and to maximize my potential as a player."
"After my playing career, I began to contemplate coaching. It's a privilege to be back at the club and in the city I cherish."
"I enjoy my time here, being around Manchester, engaging with the players and staff, even though many familiar faces are no longer around."
Van Nistelrooy's contentious relationship with Ferguson began after he was left on the bench during United's 4-0 League Cup final win over Wigan in 2006.
Tensions escalated when he was omitted from the squad for United's 4-0 victory over Charlton in the last game of that season.
He recalled, "I started pre-season, but it was clear he was looking past me and focusing on the future of the club with other players."
Van Nistelrooy also shared that he contacted Ferguson in 2011 to apologize, mending their relationship on his wife's advice.
Despite his impressive record with United, making 219 appearances and scoring 150 goals over five years, Van Nistelrooy admitted to finding it odd to be in the position Ferguson once held while he was a player.
He expressed, "In my team talk, I stand before the team, conveying the essence of Manchester United, the atmosphere at Old Trafford, the chants of the fans, and their significance."
"You aim to convey the unique pride of playing for this club. It's an honor to share that with the players and to witness their interaction with the supporters."
"The support I received was incredible, and it only fuels my commitment, especially in the short term, as we prepare for Chelsea on Sunday."
