Armus, a 6-foot-10, 240-pound forward from Serbia, started 24 games for ETSU last season. He averaged 8.0 points and 7.7 rebounds per game with career highs of 21 points against Western Carolina and 17 rebounds against Samford. He led the team with 34 blocks.
“We’re thrilled to add Mladen to our team,” Boise State coach Leon Rice said in a release. “He comes from a great program that we have a ton of respect for. He is an extremely driven, tough individual who has high character and an exceptional work ethic.
“That coupled with a redshirt year bodes well for his future as a Bronco. He’s a relentless rebounder who also has the ability to score.”
Armus made the All-Southern Conference Freshman Team with averages of 6.3 points and 5.5 rebounds in 2017-18.
He will have to sit out the upcoming season then have two years of eligibility left.