Marcus Rashford has detailed the nature of some of the latest torrent of racist messages he has received on social media.
Police are investigating after the England forward said he had received "at least 70 racial slurs" in the immediate aftermath of Manchester United's Europa League final loss to Villarreal in Gdansk on Wednesday night.
The 23-year-old says he can accept criticism of his performance but not racist "ape, monkey, baboon, banana, jungle talk".
Rashford has also revealed that one abusive message came from a person claiming to be a maths teacher.
In a statement posted on Twitter, Rashford wrote: "I'd be the first to say I've struggled this season. It's not about commitment, dedication or ability.
"The reality is I've had physical obstacles I've had to overcome that I'm still managing.
"That being said, there are no excuses for last night, we simply weren't good enough. I'm really sorry that we couldn't bring the silverware home.
"But black or white, football is football. We all wear the same shirt. We all kick the same ball.
"I've been playing this game from the day I could walk. I'm built for criticism of my performance but I can't accept the ape, monkey, baboon, banana, jungle talk.
"As a United fan myself, it's really difficult stuff to read. And I can only think about how this would have made me feel as a seven-year-old reading it. How would I ever have any faith in humanity?"
Rashford had a disappointing game in Gdansk but spoke passionately to television afterwards about his and United's determination to bounce back.
It was soon after that he tweeted to reveal he had been subjected to racial abuse online.
He wrote: "At least 70 racial slurs on my social accounts counted so far. For those working to make me feel any worse than I already do, good luck trying.
"I'm more outraged that one of the abusers that left a mountain of monkey emojis in my DM is a maths teacher with an open profile. He teaches children!! And knows that he can freely racially abuse without consequence..."
In a statement, United said they were "disgusted by the online hate and abuse aimed at Marcus Rashford and other players on social media after last night's game" and that they "utterly condemn it".
Greater Manchester Police confirmed on Thursday the abuse was being investigated.