Bielsa was fined after scouting Lampard's training sessions when in charge of Derby County last year.
Lampard said today: "It's in the past. I'm not going to dwell on it. It was a great news story but it's gone. It was a proud moment for me to go against them and win [in play-offs] but it's long gone now and I don't want to dwell on it."
Asked if he believes Bielsa has 'learned' from the episode, despite it being common practice in other football nations, Lampard replied: "Not concerned if he's learnt a lesson or not. I'm not hanging on it around the game. I respect him, I respect Leeds.
"I'm aware of the rivalry from being a player for so long and I know how fans feel about it. It's two huge clubs with a history but hard for me to equate that to Timo Werner, Kai Havertz and others who don't know that history. But I know it will be competitive because that's how Leeds approach games."