The official terms have yet to be announced, but Joe Vardon of Cleveland.com reported James' annual earnings from Nike will be "multiple times" higher than the $30 million a year Nike is paying Oklahoma City Thunder forward Kevin Durant.
On Tuesday, USA Today's Sam Amick reported the estimated $400-500 million value is "significantly low."
Fortune's Daniel Roberts tweeted out why companies are so reluctant to offer professional athletes these types of contracts:
Rovell reported talks between Nike and James "included the idea of breaking out brand separately" from Nike, but the two sides ultimately decided against it.
James has been under the Nike umbrella since before he entered the NBA. He signed a seven-year deal with the company in 2003 worth a little over $90 million. At the time, many wondered if Nike staked a little too much in an 18-year-old who had yet to play a game in the pros.
The gamble paid off in a big way as LeBron became one of the biggest stars in the NBA and a four-time MVP.
Not only has James delivered on the court, but he has also helped Nike's bottom line. According to Forbes' Kurt Badenhausen, sales of his signature shoe totaled $340 million between February 2014 and January 2015, making him the company's highest earner.