A lot of conversation has been coming around to it being a bone issue, Irsay even said as much. It's been bothering him in earnest since March. There are also reports that he has been experiencing the same pain, to a lesser dgree, for a "couple years".
They thought at first that the injury might have something to do with the os trigonum, a small, back-of-the-ankle bone that most humans don't even have. While Luck indeed has the rare and useless bone, a recent test has led them to believe it is not the source of Luck's issues.
Instead, they believe Luck is dealing with an issue at the front of his ankle, high in the joint, that has been causing pain in his calf and lower leg, above the Achilles tendon.https://www.indystar.com/story/sports/nf...kle/2008593001/
A lot of reason for the unclear diagnosis and time table is due to the fact that he complained about his calf, diagnosis showed the calf was strained, the bone issue and ankle were "overlooked" at the time of the diagnosis.
A lot of talk going around now is that a Week 1 start is a crap shoot and Week 3 is more realistic.