Goanar Mar, a 6-foot-7, 180-pound sophomore forward from Minneapolis (MN) DeLaSalle, is considered the number two prospect in the state for the Class of 2017 behind Apple Valley's Gary Trent Jr.
Mar helped lead the Islanders to its fourth straight Class AAA championship in March as they finished 26-4 this year and won 25 of its last 27 games.
Mar came off the bench as a freshman as the Islanders finished 26-3 in 2013-14 and won its last 23 games.
He will play an even bigger role next year with the graduation losses of starters Jarvis Johnson (Minnesota), Sacar Anim (Marquette) and Josh Collins (North Dakota) as the Islanders hope to break the Minnesota state record with a fifth straight title.