Yahoo Sports said numerous tweets contained racial slurs toward African Americans.
Potential No. 1 draft pick Josh Allen took responsibility for tweets that he sent while he was in high school after they were made public Wednesday night, noting that their release put him "in a panic". Allen told Smith he was parroting rap lyrics and catchphrases from TV and pop culture, adding he was "young and dumb" at the time.
In the tweets, which have since been deleted, Allen repeatedly uses the N-word, and in one response to the question "Why are you so white?", replies: "If it ain't white, it ain't right!"
He said some of the messages may have been sent by friends, as they occasionally took each other's phones to send tweets.
Allen, who will turn 22 next month, could be the top overall pick in Thursday's 2018 NFL Draft, which will be held at AT&T Stadium in Arlington, Texas.
In an interview with ESPN's Chris Mortensen on Thursday, Allen said the tweets did not reflect his character.
McCarron said during the process that his goal is to start in the National Football League, which is now much more complicated because teams don't often trade up in the first round of the National Football League draft to pick players that won't start right away.
Listed at 6-foot-5, 237 pounds, Allen ran the 40-yard dash at the NFL Scouting Combine in 4.75 seconds with a 33 1/2-inch vertical jump.
"I would love to have that pressure on my shoulders because I've always thrived in those situations, and I feel like Cleveland would be a great spot to be", said Allen. "I want them to know that I'm going to work to be the best teammate possible".