Michael O'Leary had admitted he made a 'mistake' splitting with Willie Mullins but spoke highly of the trainer now they are back working together.
The two parted ways back in 2016 with a dispute over training fees but Mullins is back training some of O'Leary's horses.
And speaking to ITV, O'Leary opened up on the dispute but also spoke glowingly of the legendary trainer.
He said: "The difficulty is I had lots of horses with lots of different trainers and we had standard training rates.
"He brought them up. I had a large number of horses with him and a number of trainers. We had a standard training fee and were buying the best horses.
"Willie wanted a different arrangement and we couldn't reach an agreement on it. There was no falling out.
"I think we would have done better in recent years if we had Willie on the trainer's roster and I've learned from that mistake.
"I'm pleased to say we've reached an agreement with Willie and we have a couple of younger horses in training with him".
And speaking last year, Mullins also insisted there was no falling out between the pair.
He said: "No one fell out and I always remained very friendly with Eddie and Michael and the family.
“Someone mooted I should have a few horses back and I said no problem. There was no great meeting or anything, it was very simple.
“It’s great to have them back and they are a huge team in Irish racing. They are good for Irish racing with all the money they put through the system in terms of sponsorship and buying horses from the point-to-point field. The amount of value Gigginstown give to Irish racing is immense and they have shown that over the years.
“They aren’t afraid to put their money where their mouth is and that is a great asset to have as an owner and we are delighted to be back together as a team.”
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