Mayfield confirmed the news, telling ESPN the relationship is "too far gone to mend."
The request comes two days after Mayfield posted a note on social media thanking the city and its fans for the past four years. With the Browns reportedly in pursuit of Deshaun Watson, many assumed Mayfield expected to be traded.
That changed Thursday, as the Browns were reportedly told they are out of the running for Watson.
With the Browns out of the running, Watson is expected to be dealt to either the Atlanta Falcons or New Orleans Saints. The Carolina Panthers were also in the running coming into Thursday, but were reportedly taken off the board.
Mayfield responded to that news by telling the Browns he wants out.
What's next for Baker Mayfield and the Browns?
The Browns have reportedly told Mayfield and his agent they will not honor his trade request.
Barring a trade, Mayfield will likely enter the 2022 season as the Browns' starting quarterback. Mayfield — who is in the final year of his contract — is looking to bounce back after throwing 17 touchdowns against 13 interceptions in 14 games last season. Mayfield was limited by injuries, and underwent shoulder surgery in January.
If Mayfield is serious about never playing for the Browns again, he can force the issue, but it's unclear if he has the clout to make that happen. Mayfield has performed as an above-average player from time to time, but there are questions over whether he can carry a team. Considering he's coming off a poor season and surgery, Mayfield might not have a robust trade market.
Mayfield could also threaten to sit out, though that's not going to help him get paid next offseason. The Browns are already hesitant to commit to Mayfield long term, so sitting out won't lead to a lucrative extension. It will result in Mayfield getting fined.
Mayfield's best course of action probably involves staying with the Browns. The team was reportedly open with Mayfield about seeking better QB options. Mayfield can use that knowledge as motivation and make the Browns shell out superstar-level money if he goes out and turns in a fantastic year.