The No. 3-rated shooting guard nationally, Blackshear told InsideTheVille.com that he'll sign with the Cardinals during the early signing period, which begins Nov. 10.
"I'm going to sign during the early period, I'll sign on [Nov.] the 10th at my church," Blackshear told InsideTheVille.com Monday evening.
Blackshear, Scout.com's No. 14 prospect nationally, committed to Louisville last December. He keeps in frequent touch with UofL assistant coach Steve Masiello.
"I always talk to Coach Masiello," Blackshear said. "We touch base and just talk to each other. He talks about what I should do on the court and [how] I can get better. I'm not a vocal guy. He told me to be more vocal and work on my ball handling. Those are the two things I need to improve and I'm going to try to do that this season."
Blackshear has not visited Louisville this fall, but plans to attend the Cardinals season-opener November 16 against Butler. He's looking forward to seeing Louisville's new arena for the first time.
One of four high school prospects who are expected to sign with Louisville during the early signing period, Blackshear said he communicates with Zach Price and Chane Behanan, two other members of the Cardinals Top 10-ranked recruiting class.
"Me and Zach Price are good friends and me and Chane touch base from time to time," Blackshear said. "I don't really know Angel [Nunez] that well, but we'll all get together and talk about it. We've got one of the best classes. I think we're trying to sign one more point guard, but I don't know who we are recruiting."
Blackshear said he is doing well in school this year and reported that he will take the ACT this Saturday.
"School is going excellent, but I'm ready to get this senior year over," Blackshear said. "I can't wait to come down and play for Louisville."
Blackshear, the top player in Chicago last season, hopes to lead Morgan Park back to the state tourney this season. His season begins later this month at a tournament in Wisconsin.
"Our season starts in a couple weeks and we're going to a tournament in Wisconsin Thanksgiving. I feel I have to do better this season. I have a chip on my shoulder and I'm ready to do what it takes. I'm going to surprise a lot of people again."