Is there concern about Luck's long-term health? Yes, given the length of the injury, there naturally is. But we also hear there might need to be a little mending between the team and Luck. Not that there's a rift between the two sides that can't be bridged.
One source, however, did indicate that the lines of communication between Luck and the team during his overseas trip have not been open and flowing regularly and that some believed and hoped Luck would remain close to the facility for the majority of the season, as GM Chris Ballard suggested Luck would be.
Luck's trip was a surprise to some in the organization and is not believed to be something the Colts' team doctors directly endorsed but rather additional medical opinions from providers who use methods (such as stem-cell therapy) that are not currently approved in the U.S. Former Colts quarterback Peyton Manning took a similar approach when he missed the entire 2012 season following neck surgery. Other athletes such as Kobe Bryant and Alex Rodriguez also had successful treatments in Europe for chronic, troublesome injuries that allowed them to extend their respective careers.
There has been some talk of trying to clear the air and make Luck available to the media, perhaps sometime in January, but it's not known if that still remains in the works. Right now, there's no reason to believe that Luck wants out or that the Colts don't want him back. All indications are that — health willing — he should be locked in as the team's starting quarterback in 2018. Still, we are entering a flashpoint for the organization during which there are a lot of big questions that need answering.