Orléans: endgame - beneficial deeds and development track
The player would just receive the one remaining citizen tile that isn't on the game boards.

The game comes with 14 Citizen Tiles. In the rulebook under setup, section 8 (labeled page 12):


  Place 13 Citizen Tiles on the marked spaces on the game board and the “Beneficial Deeds” board. Put the remaining tile on the table.


The part we are concerned with is the last sentence, where there is one Citizen that doesn't go onto any board space. On page 19, under final scoring:


  ..the player who built the most Trading Stations receives the remaining Citizen Tile.


So the player who built the most Trading Stations gets the Citizen that was left off the board during setup.



In relation to the rule regarding the person highest on the Development Track getting any Citizens tiles from the Beneficial Deeds board, it doesn't exist. Those Citizen Tiles stay on the Beneficial Deeds board and do not get scored at the end of the game.