Etienne. Basuljevic possibly.
THat said, I think we'll eventually go outside for a guy to replace Sacha. Same with BWP. We'll go outside to replace our top, top players unless someone from the inside really distinguishes himself.
One of the problems with relying on the academy players to become your stars is that at their age, if they're truly one of the best players in the league then it will be very, very difficult to prevent them from going to a better league. If Etienne is picking up 15-20 assists and 5-10 goals at the age of 21/22, you can bet we'll only get one season out of him before receiving a transfer fee that blows Miazga's out of the water. And I get people are high on Basuljevic but he's yet to play a professional game at 21 years old.
MLS is a buying league and will be for some time. Especially, as you mentioned, if a coach of Marsch's quality isn't around forever, we need to be able to contend for serious players abroad, and we can't rely solely on Papa Red Bull for that.