Andrew Luck rocked the NFL landscape this past weekend by suddenly announcing his retirement from the game of football, citing his nagging injuries stealing his passion for the game as the primary reason for his decision.

Obviously, the news has hit a whole lot of people hard, with some taking the news worse than others.

But not University of Michigan head coach Jim Harbaugh, who coached Luck at Stanford.

“He's a brother,” Harbaugh said, per Josh Henschke of 247 Sports. “One of my all-time favorite players I've ever coached. His wishes are not to play right now. As far as other people and their reactions, I would say, even though his intentions were clear and very well-spoken, to not understand a man's purpose does not make him confused.”

Harbaugh certainly makes a good point.

There has been a rather large faction of people, whether it's fans, media pundits or former players, who have questioned the timing of Luck's retirement, as he called it quits two weeks before the Colts' season opener.

But it's also not like Luck knew this was going to happen several months ago, as the 29-year-old said at his retirement press conference that it was a feeling that developed over the span of two weeks.

Luck dealt with a myriad of injury issues over the course of his seven-year NFL career, from a lacerated spleen to a shoulder problem that knocked him out for all of 2017 to the calf and ankle injuries that plagued him throughout training camp this summer.

Regardless of how you may feel, this was Luck's decision, and he is free to make whatever decision he feels is best for himself.