I like Gallup and have no problems with him staying. That being said having three 3s and three 4s this year can help rebuild the defense. Cooper and Lamb will be great and can grab another receiver to fill in the 3rd or 4th spot if Wilson stays. The real question is are you keeping Cooper after next year. If so you have to let Gallup walk and it's possible you don't get a 3rd or 4th comp pick. If they let Cooper go after next season the money you save will allow Gallup to be resigned.