ESPN has him at # 20 on their draft board as of March 19. The Athletic has him at #21 on their latest draft board which came out on March 18. Going back to school isn't going to move him up the draft board. This is the breakdown on him from the Athletic:
Herro has been something of a breakout star this year. He came into the year with some hype after a terrific performance in the Bahamas during Kentucky’s preseason tour, struggled early on, but things clicked in around the mid-point of the season. He started to knock down 3s at a 42 percent clip in conference play, running off of screens and canning shots off of movement. He’s a better defender than what he gets credit for, but lateral quickness at 6-4 will be a concern for him against the best the NBA has to offer. He’s a bucket, and I think he’d be a first round pick if he entered the NBA Draft — or he’d be an All-American if he chooses to stay in school. Regardless, Herro doesn’t have a bad choice to make.
The Athletic also had a series where college coaches commented on players who they played against and were considered NBA prospects. Here is what the coaches said about Herro:
“I watched him a bunch as a high school kid. I like him. His confidence has kind of come and gone a little bit with the consistency of his shot. I think he’ll be a good shooter if he’s not already. He works defensively more than people think. I think people think ‘white guy, he can’t move his feet.’ I think he can actually move his feet a little bit. He’s got enough of a nastiness about him that he just doesn’t want to get beat. That allows him to be a little bit quicker and engaged than he normally would be. He’s 6-4, so that’s kind of a tough deal because he’s strictly a 2. Obviously, it’s hard to guard 2s at the next level as a 6-4 white guy.
“He’s a good, not great shooter. He’s got a good feel as a passer. I don’t look at him as someone who can be a secondary handler. I look at him more the way Kentucky uses him, where he’s constantly flying off screens. He’s got a good ability to curl screens and get in the lane, where he has pretty good touch. Good passer out of there.
“I don’t know, I think he kinda needs to unpack his bags and be there a while. I would think junior year All-American, but maybe next year. He missed a lot of shots short early because he was pulling the string on them to get it out of his hand fast, and he was leaving them on the front rim. He’s got moxie. He’s got a competitiveness about him. He’s not as athletic as people say, like they’ll throw out Rex Chapman or Bobby Sura. He’s not that. But he’s a good player, and he’s a worker.
“If things come too fast, that’s going to be bad. He needs to be humbled a bit. The best thing that happened to him was going through that spell where he wasn’t playing that well because he was able to kind of relax. He’s got a personality that won’t necessarily jive well with immediate success. So for the betterment of his life, the longer that he can stay there and just evolve as a human, I think he’ll be a better NBA player as a result of it.”
“Tyler is good. He’s a good player. He had some drives where we did a good job staying in front, but once he got under the free throw line, he made it impossible to guard him. He did a good job of using his size and shooting over the top. He set us up well to get downhill, or to get us on his hip. You have to worry about him on the catch, too, because of the threat of making the 3. But then next thing you know, he’s by you because he’s crafty enough. He can create some space if you get over the top, as well.
“He also works on D. We thought we could pick on him a little bit, but he used his IQ to play angles and compensate for his lack of quickness. That’ll always be something at the next level he needs to be on top of. He needs to be stronger and play angles. But he’s good. He’s really good offensively and tries on defense. He’s an NBA guy for sure if he gets quicker.”
“I think he’s got a chance. Probably in two years. He didn’t shoot it great against us, but every time he shot the ball I thought, ‘Oh **** that’s going in.’ He’s got a great release, great rotation on the ball. Solid defender, can put it on the ground a little bit. Not one of those guys where you just jam up on him and he’s limited. He can put it on the ground, he’s good at moving and coming off of down screens and taking one dribble into a pull-up. He’s obviously a big-time player.”
“I’m higher on him than everyone else on our staff because I think he can shoot it. I can see a Klay Thompson comparison that people make. His handle on one or two dribbles isn’t quite as tight as you’d like to see right now. He can get a little loose. But I’d say that I get that comparison. He’s a really good player.”