Jaylen Brown indicators richest NBA contract and Justin Herbert turns into highest-paid NFL quarter-back

Jaylen Brown and Justin Herbert

NBA player Jaylen Brown and NFL quarterback Justin Herbert have both signed historic deals

Kylian Mbappe may be about to become the most expensive footballer of all time – but in the United States two financial records have just been smashed.

Jaylen Brown has signed the richest deal in NBA history, agreeing a $304m (£236.8m) contract to remain at Boston Celtics, according to reportsexternal-link.

Meanwhile, Justin Herbert’s new five-year, $262.5m (£203.6m) extension with the Los Angeles Chargers will make him the NFL’s highest-paid quarterback by annual salary, insiders sayexternal-link.

Brown’s five-year Celtics contract exceeds reigning NBA Finals Most Valuable Player Nikola Jokic’s $264m (£204.9m) deal at Denver Nuggets, which he signed last summer.

The two-time All-Star, 26, averaged career bests in points (26.6), rebounds (6.9) and assists (3.5) during 2022-23 as Boston reached the Eastern Conference finals.

Brown, the third pick in the 2016 NBA draft, will earn $28.5m (£22m)…