Jefferson signed with the Cowboys' practice squad Wednesday, Patrick Walker of the team's official site reports.
Jefferson suffered a plantar fascia injury during Saturday's preseason game against the Jaguars.
Jefferson suffered a foot injury and has been ruled out for the remainder of Saturday's contest with the Jaguars, Jon Machota of The Athletic reports.
Jackson signed a reserve/future contract with the Cowboys on Wednesday.
Jefferson signed a contract with the Cowboys on Thursday, Jon Machota of The Athletic reports.
The Colts waived Jefferson on Tuesday.
Jefferson (undisclosed) was activated from the reserve/COVID-19 list Monday.
Jefferson (undisclosed) was placed on the reserve/COVID-19 list Monday.
The Colts signed Jefferson (shoulder) on Wednesday.
The Chargers released Jefferson (shoulder) on Friday.