John Calipari is building another physical imposing frontcourt for the Kentucky Wildcats, securing a commitment from Australian center Isaac Humphries.

According to ESPN, Humphries was originally part of the 2016 class, but will reclassify up a year and will arrive on campus this weekend to play for the Wildcats this season. Kentucky also confirmed the news on their athletic department's official website.

"I watched Isaac when he first came over to the United States in high school in Indiana and was impressed with his skill and size," Calipari said in a statement. "He reminded me of a much bigger Josh Harrellson. He's very skilled, has great hands and is a great passer. To have a 7-footer who just turned 17, he has a lot still in front of him, and the best part is he wants the challenge of playing at Kentucky."

Last year, Kentucky rotated Willie Cauley-Stein, Karl-Anthony Towns and Dakhari Johnson in the low post, but all three left for the NBA. The addition of Humphries and his reclassification will help Calipari restock on big men.

Humphries, a four-star recruit with a 0.9800 composite ranking from 247 Sports, will join Skal Labissiere in Kentucky's frontcourt next season. Labissiere was ranked second overall on the 2015 ESPN 100, whereas Humphries landed 49th on the 2016 ranking.

Humphries is the second 2016 recruit to move up a year, which five-star guard Jamal Murray did earlier this year. That gives Kentucky five recruits for the 2015 cycle, possibly evening the race for the top class.

"The opportunity to play two years at Kentucky is something he couldn't pass up," Humphries told ESPN. "The opportunity to play for Coach Cal and learn from him is invaluable."