The Cowboys made the decision to keep Frederick on the active roster coming out of the preseason, even though there isn’t a definitive timetable for him to return.
Frederick has been diagnosed with Guillain Barre Syndrome, which is a rare disorder in which your body’s immune system attacks your nerves.
Frederick, 26, is a former first-round pick of the Cowboys back in 2013. He’s entering the third year of his eight-year, $66.56 million that included $26.2 million guaranteed.
Frederick stands to make base salaries of $10 million and $6 million over the next two years of the agreement.
In 2017, Frederick appeared in all 16 games for the Cowboys and was rated by Pro Football Focus as the No. 2 center out of 36 qualifying players.
Irving, 24, originally signed on with the Chiefs as an undrafted free agent out of Iowa State back in 2015. He was waived at the start of the regular season and later added to the Chiefs’ practice squad.
The Cowboys signed him to their active roster just a few weeks into the 2015 season and brought him back on a one-year, $615,000 exclusive rights contract last year.
Dallas used a second-round restricted tender on Irving during the offseason, which will cost them $2.914 million for the 2018 season.
In 2017, Irving appeared in eight games and recorded 22 tackles, seven sacks, a forced fumble and six pass defenses.
We have him featured in our Top 25 – 2019 NFL Free Agents list.