Sasuke is a lightning base user and he also good at manipulated element for various function in battle.Flying thunder god technique is not a blood line jutsu and Minato copy this jutsu from Tobirama .Sharingan have the abilities to copy jutsu by jutsu looking at it.Hashirama asked Tobirama to use the jutsu to teleport them to the battle field,this mean sasuke will see the hand sign and requirement of using the jutsu.Do u think Kishimoto will give Sasuke this level of technique?
In addition Sasuke have already seen alot of other jutsu perform during the war arc and he never used yet these jutsus battle.
Edo tensi release (from unconcious kabuto ) and activation (by orichimaru)
Izamai (from itachi)
Izanagi (from danzo)
Unsealing and activation of the death reaper seal (orichimaru)
In addition Sasuke have already seen alot of other jutsu perform during the war arc and he never used yet these jutsus battle.
Edo tensi release (from unconcious kabuto ) and activation (by orichimaru)
Izamai (from itachi)
Izanagi (from danzo)
Unsealing and activation of the death reaper seal (orichimaru)