We may now have a clue as to why things went south between Patrick McCaw and the Golden State Warriors.

In a piece that ran on Friday, Marcus Thompson of The Athletic reported that McCaw was upset with the Warriors for signing Nick Young two summers ago in a move that put his role in doubt. Coach Steve Kerr was also said to have made matters worse during training camp by declaring an open competition for the backup shooting guard spot. Thompson goes on to cite some unnamed insiders, who said that the Young signing was “the first grievance” that McCaw had with the team as well as “the only tangible issue” that was vocalized.

The now 23-year-old McCaw carved out a role for the Warriors as a rookie in their title-winning 2016-17 campaign, making 20 starts in 71 regular seasons appearance plus three starts in 15 playoff appearances.