Ryan Blake, the NBA’s scouting consultant, still feels it is too early to pinpoint a consensus top five for the June 25 draft.

But he doesn’t think Knicks president Phil Jackson can go wrong at his spot. As second seed in the May 19 draft lottery, the Knicks have locked up no worse than a top-five pick — with a 19.9 percent chance of winning the top overall spot, and the opportunity to select between centers Karl-Anthony Towns (Kentucky) and Jahlil Okafor (Duke), the team’s two chief targets. Jackson has hinted multiple times the two-way Towns is for now his No. 1 choice.

The Chicago draft combine begins Wednesday and will give Jackson a chance to interview the two centers and three other members of the Big 5 — point guards D’Angelo Russell (Ohio State), Emmanuel Mudiay (Guangdong) and late-comer, swingman Justise Winslow (Duke). They are each entering the draft following “freshman’’ seasons. (Mudiay spent his year out of high school in China).

The Big 5 won’t participate in the 5-on-5 games in Chitown but could do the “skills and drills’’ segment and take physicals.

“It sounds weird but it’s still kind of early,’’ said Blake, who runs the seniors-only Portsmouth Invitational draft camp staged last month. “You’ll find this [a] deep draft. You might find other players in that top group.’’

Blake mentioned Kentucky’s Willie Cauley-Stein and Wisconsin’s senior center Frank Kaminsky, the college player of the year who had a terrific Final Four. Blake said Kaminsky is “a coach’s dream,” will be a good NBA player, but personnel men look for “franchise players” in the top five. The Wisconsin senior doesn’t qualify.

“It’s an extraordinary group and different,’’ Blake said of the Big 5. “These guys are used to sharing the wealth — players who are skilled, not selfish and versatile. It’s not just scoring or defense.’’

Blake said because of Okafor’s poor last impression at the Final Four, workouts could prove vital as he gets a chance to get into “great shape.” Blake said he feels Towns still is a project offensively.

Blake’s darkhorse for No. 1 pick is Russell, whose basketball IQ is off the charts in his estimation.

Now that the NBA released its early-entry candidates, Blake, whose late father Marty was one of the league’s scouting pioneers, breaks down the Big 5.

Blake’s Take:

D’Angelo Russell (G, Ohio State, 6-foot-5, 175 lbs.)

Blake: You like his size and athleticism — but I don’t mean just speed and quickness — it’s his mindset athleticism that’s a skill set he has that’s so high for such a young age. This guy can make a difference on a team real early. He’s best running the point and is a smooth operator. He can make plays for himself and others and can step up and take over a game. But he’s got an elite brain, sees the floor and angles. You don’t see that from kids at such a young age. You saw him mature and believe in himself. That’s important. He’s not cocky, just believes in himself. He’s like a Mike Conley, Jason Kidd, and a Steve Nash, the way he holds his dribble, and I like the way in a pick-and-roll he gets inside for a floater. He’s got a good assist-to-turnover ratio. The game looks slow to him, so in the speedier NBA, he’ll still be comfortable.

Emmanuel Mudiay (G, Guangdong, China, 6-foot-5, 200 lbs.)

Blake: When you leave high school to play professionally, you take a risk. Brandon Jennings left and played in Italy and fell to 10. Problem is, you have to enter the next draft under rules, so it’s a risk if you get injured or don’t get playing time. And playing in China, it’s not so easy to see a person live. He got hurt in December and was out a long time and lost a lot of game education, game toughness. He’s a good player with great size for a combo guard. Definitely can run both guard spots, attacks the rim with a crafty handle, quickness and a good boardman for his size and a great motor. He came back from the long layoff with 24 points and eight boards in the CBA semifinals. It will be interesting to see if the agent controls his workouts and doesn’t go against college guards. He’s not a great free-throw shooter. It’s risk-reward with him because he’s got a huge upside.

Jahlil Okafor (C, Duke, 6-foot-11, 272 lbs.)

Blake: I do think that any workouts are important, and he can be an example of a guy getting in great shape during this period and get into Olympic conditioning. In Okafor, you’re always reminded of what you see last and was in consistent foul trouble. But the thing about him, it’s his offense when looking at New York and how he fits into the second-worst offense in the NBA. He has that arsenal of versatility, to move in the paint, with that great footwork and a good passer out of the high and low post. He’s got that jump hook in the middle of the lane and recognizes angles. He’s not a great free-throw shooter, but he has that touch around the basket and from mid-range. He’s not going to be great player because he can leap out of a building or is extremely quick. I look at players like Okafor and Russell who do so much more that exceeds athleticism. You’d like to see him in better condition to become a better defender and rebounder. It’s important to have that juice on the offensive end, but if you can’t do that on the defensive end, he won’t find that playing time. He has to prove that by coming in great condition for workouts.

Justise Winslow (F, Duke, 6-foot-7, 229 lbs.)

Blake: He had a great tournament. Good size with toughness and great track record as a winner. He’s a great pieces guy, young, 19 years old. His upside is big and is another guy with a lot of confidence. Guys like DeMarre Carroll, 6-6, you don’t want him guarding power forwards. He’s got to be at small forward to defend the 3 spots. He’s got the aptitude of knowing schemes and being that good defender on the pick-and-roll. He can light it up from deep and get to the basket, but not a great free-throw shooter. He’s a good playmaker. He’s well-rounded. He’s proven he can share the wealth . He doesn’t have to be the go-to guy but can be when needed.

Karl-Anthony Towns (F/C, Kentucky, 7-0, 248 lbs.)

Blake: Rarely see a guy in one year have that development. Offensively he’s still raw. He’s got soft touch with a little range. He’s a skilled big man who can block, rebound, defend. That’s going to be noted first. His offensive game will come around because the guy has a good touch. He had to play center and in the post and only got 21 minutes per game because of Kentucky’s platoon system . He’s got good lateral quickness and can be a stretch 4, but we don’t know how he’ll do outside because he only did it in high school. He’s got a 7-4 wingspan, a 9-5 reach. He can be a physical player, but he is very coachable. So you look at that size and say, yeah, there’s a huge upside there. I would say he’s a project offensively and he’ll have his learning curve but has offensive skills. The Knicks have to decide what fits into their triangle and culture. Not an easy decision.