The Indiana freshman tore his ACL during a weekend workout in mid-March and is currently rehabbing that injury now.
Indiana coach Tom Crean expects Hartman to make a full recovery and make an impact when he returns next season.
"I think so," Crean said Monday in an exclusive interview with AllHoosiers.com. "He could've easily had Austin [Etherington's] minutes this year, but we went with the older guy at a time when we needed something different. Hindsight's 20/20, so you just move on and you move forward, but he definitely could be."
Etherington, who announced last month he would transfer, provided a spark at a time in the season when the Hoosiers really needed one. He averaged 2.0 points and 1.6 rebounds per game for the season, but shot just 23.8 percent from beyond the arc. He was supposed to bring perimeter shooting to the team.
Hartman played on 4.5 minutes per game last season, averaging 0.7 points and 0.9 rebounds per contest. He did not make a 3-pointer.
"I gave Austin those minutes. It is what it is," Crean said. "But I'm very confident in Collin's future. The really big thing for him this offseason is to really study film."