The move creates $5.6 million in cap space for Chicago this year.
Leno, 27, is a former seventh-round pick of the Bears back in 2014. He played out his four-year, $2,266,512 rookie contract before signing a four-year, $38 million extension in 2017.
Leno is currently in the third year of the deal and was set to make a base salary of $7.9 million in 2019. Leno will make base salaries of $7.9 million and $8.9 million the next two years of the deal.
In 2018, Leno started in all 16 games for the Bears and was rated by Pro Football Focus as the No. 19 offensive tackle out of 80qualifying players.