Lukaku left United for Inter Milan last year and his final season in England saw him accused of not putting in the effort in games.
The Belgian forward's fitness was regularly criticised so in one of his final acts as a United player, he decided to settle the debate.
Private training data of top speeds was released and behind first placed Diogo Dalot (36.43k/h) was Lukaku (36.25km/h.)
Lukaku deleting a tweet leaking the team's speed stats to prove he ain't slow is funny as heck pic.twitter.com/4cbxVGe1Uh
- James 'TGK' Bralant (@TGK_22) August 2, 2019
It means the 27-year-old was quicker than Marcus Rashford (35.71km/h) and even Daniel James (35.53km/h,) two of United's faster attackers.
Luke Shaw was the Red Devils' slowest player and he joked about the stats with Lukaku on social media.
They only wanted me to go 70% don't let me start speaking on you boy :eyes::cold_sweat:
- Luke Shaw (@LukeShaw23) August 2, 2019
Lukaku scored 42 goals in 96 games at United but found himself left out of the team under Ole Gunnar Solskjaer, who preferred Anthony Martial up front.
He spoke to the Times earlier this week and hit back at critics who think he was phoning it in at Old Trafford.
"A year ago, when I was in England, I was 'lazy, I didn't run, I didn't do this and that,'" he begun.
"Here [Inter Milan,] they call me the hardest worker in the room. If you look at me playing here and there, I mean, there are improvements, yeah, but the [same] Rom is still here.
"Stuff happens in football but it's something you need to explain to the next generation of kids, that you need to have full control over your destiny. Make sure when you go somewhere that every piece of the puzzle has to be right.
"Know what I mean? At the time, we saw the outcome, we saw how I did. And if you look at me now you see a different outcome, you see the full person, you see the full potential. You see what I could have been doing in England.
"They will call me slow and I'm like, 'Slow? Me, slow? I cannot keep up with the fast pace game of Man U? There were too many little things where I thought this is not right.
"If you call me slow I would not score a goal like I scored the second against Shakhtar Donetsk in the [Europa League] semi-final.
"If I was slow I would not have got the penalty like I did against Sevilla in the final. That's two years after. Are you going to say me at 27 is faster than I was at 25? That's what I'm trying to say. It's just little things. I was like, you know what? Eff this. I'm out."
Featured Image Credit: PA Images
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