The Canadian Hockey League and the National Hockey League currently have a long standing agreement in place where players that are still eligible for junior go back if they don't make their NHL rosters out of training camps, but Gary Bettman has shown that he's able to make exceptions to that agreement should a player be too good for the CHL, allowing them to play in the American Hockey League.
Now, with the exceptions Bettman has granted this has proved that he favours the expansion teams over others, take a look:
Jordan Dumais and Denton Mateychuk have had exceptional camps for the Columbus Blue Jackets proving that they're too good for the CHL, but when the Blue Jackets applied for an exemption so that they could play in the AHL this season, they were denied.