The Cowboys signed Mims on Thursday, Todd Archer of ESPN.com reports.
The 2020 second-round pick played three years for the Jets before bouncing around practice squads for the next two years. Mims played the 2025 and 2026 seasons in the UFL, accumulating 11 receptions for 110 yards over 11 games split between the Battlehawks and Renegades. The wide receiver will now compete with a packed Cowboys corps in an attempt to remain on an NFL roster.