Role matters.
Some athletes in the NFL are big enough or fast enough or strong enough to play football at various spots. To contend at different positions and maintain different responsibilities. Some players are good enough that you add them to your team and figure out the details later.
Some aren’t.
Los Angeles Rams CB Dont’e Deayon is 5’9”, 159 lbs. He is one of just five Rams listed under 5’10”. But he’s listed one inch taller than CB Nickell Robey-Coleman.
So there’s simply not a ton to ask of Deayon.