Ighalo made a surprise switch from Chinese Super League side Shanghai Shenhua to Manchester United on the last day of the winter transfer window in January 2020.
The 32-year-old made 23 appearances in all competitions during his time at Old Trafford and scored five goals.
The Nigeria international now plays for Al-Hilal in Saudi Arabia but still has fond memories of his time in the red half of Manchester, where he stayed for one year.
Ighalo has told ESPN of his stint with the Red Devils: "In years to come, you need something to show your children... I have been talking to my children about Manchester United, the experience.
"I left Old Trafford with pride, with my head up, because it was my dream team and not everybody's dream comes to pass. Mine came to pass so every day of my life, I'm grateful.
"To be the first Nigerian to play there and so far the only Nigerian, those are great achievements for me and I did well so I'm happy for that."
He added: "The atmosphere in Old Trafford is different. It is a big club. If you're not inside, you don't know how big the club is. It is a massive, massive, massive club.
"So, I thank God I played for the biggest club in the world, it's an achievement for me and when you say, 'what I should do better?' I think I did everything I should do. I worked hard, I scored a few goals and I'm happy.
"I don't have one regret, I have zero regrets for my time at Manchester United. They are still my team till today and I'm going to support that team to death.
"Even when they are struggling, I will still support them because it is Red Devils all the way."
