I would love to take all three.
Sickles is obviously talented and could slot into the CAT and make this LB haul even more ridiculous than it is.
Brennemen who would need a year anyways in strength and conditioning and #1 TE. I honestly believe Kelly is on the multiple TE set for his spread bandwagon. Its the new wave, especially when you have TEs that can block and are match up nightmares. You can flex them, motion them, and they can still help you run power from the shotgun single back.
Fuller if and only if he can play CB.