Savannah is higher than brooklyn
the system goes DSL, GCL rk, App league rk (kingsport), NYPenn A- (Bk), Sally A (savannah) , FSL A+ (St Lucie), EL AA (bing), PCL AAA (LV)
he'll likely start in brooklyn but has a shot, w/ a strong showing, to advance to Savannah @ some point during the year
however, if he really shows advanced tools in minor league ST, they may elect to have him skip brooklyn so as to get a full season of play in as bk is a shortened season
a really aggressive path (which i doubt they pursue) would be start in Sally, move up to St Lucie at the break, break next year w/ AA and then AAA at the break, shot to earn a spot in ST in 2015 as a 21 year old
ultra conservative would be : stay behind for extended ST, spend the rest of the season w/ the cyclones, break camp in 2014 in the sally, spend 2015 in A+, spend 2016 in AA, spend 2017 in AAA, start 2018 on the big league roster (assuming he found success at all those levels) as a 24 year old
the path they choose will likely be somewhere in the middle and he will probably be ready some time b/t 2016 and 2017 as a 22-23 year old