Decide what kind of career you want
Choose Player Career when the decision you care about is your individual footballer’s progress and place in the side. Manager Career is for managing the team; EA describes its separate systems elsewhere. Start by deciding whether you want to follow an existing player or build a new one, then review the options shown in your game version.
Sources: EA FC 27 modes (opens in a new tab) · EA FC 27 Career deep dive (opens in a new tab)

What Rivalries changes
EA describes Player Career Rivalries as competition with a teammate for the starting spot. That makes selection a continuing objective as you play, rather than just a one-time setup choice. The details should be read in EA’s Career notes; this is not a promise of a particular result after a fixed number of matches.
Before your first season
- Confirm you are in Player Career, not Manager Career.
- Review the player and club choices displayed by your version.
- Check the game’s current settings and objectives before committing to a long save.
Sources: EA FC 27 modes (opens in a new tab) · EA FC 27 Career deep dive (opens in a new tab)
Independent FC 27 guide. Linked official text supports the stated facts; any game imagery is promotional context.