The Giants cut Wing on Saturday, Mike Garafolo of NFL Network reports.
Wing has signed a contract extension with the Giants through the 2019 season.
Wing was traded to the Giants on Friday, Aaron Wilson of the Baltimore Sun reports.
Steelers signed P Brad Wing and LS Bryce Davis to reserve/future contracts.
The Eagles gave Wing a hefty $12,500 signing bonus as an undrafted free agent this past April, but he didn't wind up on anyone's regular season roster. A talented punter, Wing will vie for Pittsburgh's starting job in 2014.