Arsenal boss Unai Emery has revealed Sir Alex Ferguson ribbed him about the Europa League during a manager's conference in 2016.
Emery has won the competition three times, all with Spanish club Sevilla, and reached the final with Arsenal last season.
When meeting in Switzerland, Ferguson couldn't help but poke fun at Emery.
In an interview on Soccer AM, Emery said: "One day we were in Nyon for the coaches meeting and I was defending a lot the Europa League, and he – Ferguson – asked me,
"But really Unai, do you not prefer to win the Champions League?
"Yes of course! He don't need to say it [laughing].
"But at that moment I can be happy and I can defend the Europa League because also I think the UEFA people improve a lot this competition. But really, really the first is the Champions League – okay."