Turns out it’s not just a calf injury that has sidelined Colts quarterback Andrew Luck this offseason. According to team owner Jim Irsay, there’s a bone issue in his lower left leg as well.

Irsay shared that information in a radio interview this week while assuring listeners that Luck is not at risk for an Achilles tendon injury.

“I think that after the [Kevin] Durant thing, everyone’s erring on the side of caution, but quite frankly this is not even in the Achilles tendon,” Irsay said. “It’s in another area. It’s a bone. You know I’m not good at these things. … It’s a small little bone.”

Luck has participated in just three practices during Colts training camp after missing all of OTAs and minicamp earlier this summer.