I have posted this once already but decided to do it again for people who don't know how to do it. If you do know how to do this then that's great im just doing it for the people who don't.

- Step 1: Create a Player. ( Not MyCAREER )

- Step 2: Assign him to the team you want him to be on in Create a Legend mode.

- Step 3: Create a Team & skip everything until you get to the drafting part ( Putting players on your team )

- Step 4: Draft everyone from the team you put your created player on onto the created team, Including your created player. ( Ex: If your created player is on the Celtics, Draft everyone from the Celtics roster onto the created team, Including your created player.

- Step 5: Save the roster.

- Step 6: Start a new season & when your at the options for the season turn on Customize League.

- Step 7: Once you proceed to the next menu it should show a list of teams. Replace any of the teams with your created team. ( The name should be "TEAM" )

- Step 8: When you proceed to the menu after that select your created team to play with in your season.

- Step 9: Save the season & quit back to the menus.

- Step 10: Load the roster again.

- Step 11: Go to manage roster and look for your created team.

- Step 12: Trade your created player from the created team for your created player that's on the real NBA team. ( Ex: Trade Rajon Rondo for Rajon Rondo. )

- Step 13: Go to Create a Legend mode & go to the team your created player is on & you should see that you can select him & play as him.

If this worked for you please thank this post so other people can know it worked.