I was thinking Tye Hill. I really haven't done any research on CBs but both Walter and Mayock have him rated as the 3rd best. He's also 6' and pretty fast. Big WRs are all the rage now and I think that requires big CBs.
My next choice would be Roby or Roberson.
http://walterfootball.com/draft2014CB.php
Marcus Roberson*, CB, Florida
Height: 6-0. Weight: 191.
40 Time: 4.61.
Projected Round (2014): 1-2.
3/8/14: The junior recorded 11 tackles with three passes broken up in 2013. Roberson missed three games with a PCL strain and was very rusty in his return against LSU. He had a mixed outing against Georgia, too. Roberson was excellent in coverage versus Miami, but he got banged up during the game. Roberson had three tackles with four punts returned for 72 yards in Week 1. He then landed a suspension late in the season.
While Roberson didn't have a big statistical year, his man-coverage skills could get him drafted in the late first or early second round according to league sources. However, that was before Roberson had an ugly performance at the Combine with a surprisingly slow 40 time.
8/17/13: Roberson formed a good cornerback tandem with Purifoy last year. Roberson excelled in man coverage and was a key part of a tough Florida defense. He totaled 23 tackles with 12 passes broken up, a forced fumble and two interceptions.
Roberson, a true freshman in 2011, beat out a number of highly touted prospects for a starting job. He played well and showed some natural man-cover skills when going against elite receivers. Roberson injured his neck and missed the final three games of his first season. Still, he recorded 22 tackles and an interception.
Roberson is the latest in line of talented Gators cornerbacks like Joe Haden and Janoris Jenkins to start quickly for Florida. Roberson has size, length, quickness and big upside to be man-cover corner in the NFL.
Bradley Roby*, CB, Ohio State
Height: 5-11. Weight: 194.
40 Time: 4.39.
Projected Round (2014): 1-2.
3/8/14: At the Combine, Roby put his great skill set on display. He has the physical talent to be a No. 1 corner if he lands with good coaching, but his bad tape from the 2013 season is holding him back from being a sure-fire first-round pick.
In 2013, Roby had 62 tackles, 13 passes broken up and three interceptions. It was an ugly season that hurt his draft stock significantly, but he still entered the 2014 NFL Draft.
Roby was ejected against Iowa for targeting and had a mixed outing against Northwestern. Roby blocked a punt in the end zone for an Ohio State touchdown versus the Wildcats, but also was burned for 41-yard and 67-yard pass plays. That was the third game this season that he had problems in pass coverage.
A week earlier, Roby was torched by Wisconsin wide receiver Jared Abbrederis. Abbrederis kept the Badgers in the game as he went over 200 yards receiving, including one touchdown at Roby's expense. Abbrederis would've beaten Roby for more points, but Joel Stave couldn't get him the ball. Stave had a terribly thrown pass intercepted by Roby. In the ground game, Roby had some tackles and slapped away a couple of quick slants. It was still an ugly outing that hurts his draft stock significantly.
Roby was suspended for the Week-1 game against Buffalo because of some legal trouble in the offseason. Week 3 against California may have hurt Roby's stock even more than his off-the-field issues. He was beaten on a number of receptions, including on a touchdown. Roby dropped an interception and was nearly beaten for another touchdown, but got lucky that Golden Bears wide receiver Bryce Treggs dropped the pass.
8/17/13: Roby was a real play-maker for the Ohio State defense in 2012. The junior made big improvements as a second-year starter. Roby totaled 63 tackles, one sack, two tackles for a loss, 17 passes broken up and two interceptions. He is fast and very instinctive.
Roby broke into the starting lineup as a redshirt sophomore in 2011. He totaled 47 tackles, four tackles for a loss, three interceptions and a forced fumble. Roby is an instinctive cover corner who has a knack for big plays.
The senior hurt his draft stock with an arrest in the summer for a bar fight. There is the possibility that Roby could have a suspension at some point during the 2014 season. In the past two drafts cornerbacks, Janoris Jenkins and Tyrann Mathieu, with off-the-field issues have fallen to the second day of the draft. Roby doesn't have as bad of a history as either of those two, but character red flags will be something Roby has to repeatedly address in the lead up to the 2014 NFL Draft.
