Of this group, the Colts signed Fabiano to their practice squad.
Gradkowski, 28, is a former fourth-round pick of the Ravens back in 2012. The Panthers signed Gradkowski to a three-year, $3.15 million contract last year and he set to make a base salary of $875,000 for the 2017 season.
The Panthers placed Gradkowski on injured reserve back in September and later released him with an injury settlement.
In 2016, Gradkowski appeared in 10 games for the Panthers and is rated by Pro Football Focus as the No. 33 center out of 37 qualifying players.
Fabiano, 24, wound up signing a three-year, $1.62 million contract with the Ravens as an undrafted free agent out of Harvard back in May of last year. He was, unfortunately, cut loose during the final week of the preseason and later signed on to the Browns’ practice squad.
Cleveland promoted him to their active roster before later waiving him to free up a roster spot for Jonathan Cooper, who was claimed off of waivers. The Browns signed Fabiano to their practice squad soon after, but elected to cut him loose coming out of the preseason.
Fabiano later signed to the Redskins’ practice squad, but was cut loose in September. He signed on with the Patriots for Week 10 but was cut soon earlier this month.
The 49ers brought him in for a workout shortly after he was waived, but was not signed following the session.
In 2016, Fabiano was active for four games.