I've always played the Count as when you score someone else points and you score none, then you may move a follower to the City of Carcassonne
instead of placing a follower.
The CAR says you may deploy a barn, and as long as you don't score points, then you may
also deploy a follower to Carcassonne. No where in the rules does it say that you can't deploy a follower to the tile that you place and to the City of Carcassonne.
Question:
Is this legal? I'm sure this would be very hard to do, but essentially, you could play a tile on your builder and add a follower to that tile. If that tile scores for your opponent, then you can also place a follower in Carcassonne? Then with you extra turn, place another follower on a tile and score for your opponent and place yet another follower in Carcassonne? You would have deployed 4 followers in a single turn!
CAR Clarification:
In version 5.0b6 of the CAR, question 68:
Question: Can followers in Carcassonne be redeployed to empty roads, cities, cloisters or farms?
Answer: Yes, and when an empty road, city, or cloister is completed, followers in the appropriate quarter of the
city...
This was a confusing question, and the answer made it sound like the empty road, city, etc. is not completed. Could we get the question changed for clarification?
For example:
Can followers in Carcassonne be redeployed to empty roads, cities, cloisters or farms that are completed?
or
Can followers in Carcassonne be redeployed to completed roads, cities, cloisters or farms that are not yet claimed?