Admirer of ancient structures that he is – as a boy, he’d press his nose against the car window during weekend jaunts to Paris, or Madrid, or Berlin – Andrew Luck isn’t sight-seeing at the moment, scratching that nerdy architecture itch of his.

He didn’t travel 4,200 miles for vacation. He traveled 4,200 miles to get his shoulder working again.

“I’ve been in contact with him,” says Indianapolis Colts left tackle Anthony Castonzo, one of Luck’s closer friends on the football team he won’t take a snap for all season. “He’s working. Trust me. He’ll do everything he possibly can and go anywhere he has to in order to fix this.”

The Colts are 3-7, playoff chances vanished before Thanksgiving, and their star quarterback is in Europe, chasing answers to the conundrum that has cost him an entire season during what should be the prime of his career. That is: Why, 10 months after “a simple labrum repair,” as Colts owner Jim Irsay deemed it, is that throwing shoulder of Luck’s still not right?

For a potential solution he’s ventured abroad – exact location undisclosed – where the Colts’ franchise quarterback spent the bulk of his childhood while his father, Oliver, ran a pro football team and, later, a pro football league. He's there because the rehabilitation he’s done to this point hasn’t worked.

“He’s probably not convinced they know what’s going on,” says Dr. Luga Podesta, a regenerative orthopedic specialist at Bluetail Medical Group in Naples, Fla., who did not treat Luck but has consulted with multiple NFL teams about this type of injury and others. “They’ve given him some doubt as to how they’re treating it, or maybe his agent has some doubt.”

Or maybe Luck is, as Castonzo noted, willing to do anything, try anything, to get this nightmare over with.