Indiana senior Collin Hartman out indefinitely following knee surgery

IU isn't getting into specifics about the injury and a timetable for the forward's return

Collin Hartman figures to be a solid glue guy for IU this year, whenever he's able to return. USATSI

Indiana had a significant player suffer a non-contact knee injury last week.

The school announced Wednesday that senior Collin Hartman's left knee went under the knife to "repair damage" after a non-contract drill sidelined him.

When will Hartman be back? The school didn't say; it's too soon to truly know. We also don't know the true nature of the injury. Non-contact knee injuries vary in terms of severity. Sometimes they're not serious, while others can sideline players for nearly a year.

"Any time you see one of your players go down to injury," Indiana coach Tom Crean said in a statement, "it tears you up as a person and as a program -- even more so when it's someone like Collin Hartman, who has been a huge part of our success and is in his senior year. We all look forward to helping him recover and rehabilitate."

IU's official Instagram page also posted this:

@CollinHartman30 underwent successful left knee surgery to repair damage from an injury sustained last week in a non-contact drill. His rehabilitation begins immediately and it is too early to determine a timetable for his return.

A photo posted by Indiana Men's Basketball (@indianambb) on Sep 28, 2016 at 2:09pm PDT

Hartman averaged 21.9 minutes per game last season and put up 5.0 points and 3.1 rebounds. His role is expected to inflate this season for an IU team that has the potential to be quite good.

The Hoosiers get going in 42 days, when they open in a thrilling game on Nov. 11 against Kansas in the Armed Forces Classic.