Glennon, 31, is a former third-round pick of the Buccaneers back in 2013. He played out the final year of his four-year, $3.104 million rookie contract before signing a three-year, $45 million contract with the Bears in 2017.
However, the Bears elected to move on from Glennon after just one season and he later signed a two-year $8 million contract with the Cardinals in 2018. Arizona released him during the offseason and he later signed on with the Raiders for the 2019 season.
The Jaguars signed Glennon on a one-year deal in 2020. He was released and added to the practice squad before returning to the active roster.
In 2020, Glennon appeared in five games for the Jaguars and completed 62 percent of his passes for 1,072 yards, seven touchdowns and five interceptions.