Gallup is scheduled to visit the Ravens on Thursday, Adam Schefter of ESPN reports.
The Cowboys released Gallup on Friday, Michael Gehlken of The Dallas Morning News reports.
Gallup may be released this offseason, according to Jon Machota of The Athletic.
Gallup played 33 of the Cowboys' 66 snaps on offense in Sunday's 22-20 loss to the Dolphins, recording two catches for four yards on two targets.
Gallup caught his only target for nine yards in Sunday's 31-10 loss to the Bills.
Gallup caught three of five targets for 48 yards and a touchdown in Sunday's win over the Eagles.
Gallup caught his only target for 13 yards in a 45-10 win over the Commanders on Thanksgiving.
Gallup caught three of five targets for 31 yards in Sunday's win over the Panthers.
Gallup caught both his targets for 70 yards and a touchdown in Sunday's 49-17 rout of the Giants.
Gallup caught two of three targets for 19 yards in Sunday's loss to the Eagles.