The Jaguars have until May 4 to exercise their fifth-year option on Fournette, who is scheduled to make $4.16 million in base salary in 2020.
Fournette ran for a career-high 1,152 yards and caught a team-high 76 passes last season while scoring only three touchdowns. His 1,674 yards from scrimmage ranked sixth in the NFL in 2019.
After missing 11 games in his first two campaigns, Fournette proved last season he could stay on the field, missing only Week 17 because of an illness.
After questions about his work ethic, commitment and maturity following his first two seasons with the Jaguars, Fournette showed signs last season that he had matured. He worked out in the offseason with a strength coach, and he reported to training camp in good shape and didn't miss a practice.
When he wasn't on the field during the preseason, he wore a headset at his request so he could hear offensive coordinator John DeFilippo's playcalls.
ESPN's Michael DiRocco contributed to this report.