A number of NFL veterans have to keep their head on a swivel heading into training camp.

Big names like Richard Sherman and Justin Houston remain on the free-agent market. Other high-profile players could join them this summer after sitting on the roster bubble and ultimately getting cut.

The most notable veterans who might find themselves in that position either have major name recognition or a huge contract. Regardless, some other teams should be interested in scooping them up right away.

N'Keal Harry, WR, New England Patriots

Wide receivers don't have many chances to prove they can make a difference in the NFL given the sheer number of players at the position who get drafted every year.