McGloin, 28, originally entered the league as a 2013 undrafted free agent with the Oakland Raiders, where he spent four seasons. He spent time with the Philadelphia Eagles and Houston Texans last year.
If you remember, McGloin was the first quarterback to replace Derek Carr when he suffered a broken fibula in Week 16 of 2016. McGloin’s time as a Raiders starter was short-lived, however, as he suffered a shoulder injury in the game.
McGloin has seven career starts with an even 11 touchdowns and 11 interceptions, as well as a 75.3 passer rating. He has a 1-6-0 career record. McGloin likely jumps into the No. 3 role behind Chad Henne for 2018.
The 25-year-old Spruce entered the league as an undrafted free agent with the Los Angeles Rams in 2016. He signed on with the Chicago Bears practice squad las October and was released in January.
Spruce is a practice squad candidate for the Chiefs.