I'd probably take Brodie over Sier, even though Sier looks a fraction more proven. Plus, Brodie would cost less than Sier even then not by a lot I don't think.Both Brodie and Sier are about 190cm. Sier really needs a consistent run at it so hopefully with Treloar gone that's what we'll see. StatsPro tells me Brodie wins more contested ball but is still only average, above average for centre clearances though.
Both look ordinary stats-wise but we would want that player to do a lot of work off the ball anyway, blocking, drawing players and making space.
Who are the other options?