Fodders who do not understand how FTG works Lol
Minato sends one shadow clone and that clone touches the Susanoo [doesn't matter if its enton covered because its a clone and Minato has already shat on Enton+FRS]
As soon as the clone touches Susanoo a chakra link is formed between Minato and the Susanoo and Susanoo user since Susanoo is made up of chakra of the user.
With FTG its Minato who decides who and what to teleport with him so the Clone is left with three choices
Choice 1: Teleport away with both Sasuke and his Susanoo
Choice 2: Teleport away with Susanoo leaving Susake hanging
Choice 3: Teleport Sasuke out of Susanoo to a location where he wants
So as I said three clones are needed for base Minato to beat full powered Sasuke well there you go
1. Clone makes the link between him and Susanoo then he uses Hiraishin swap with another clone [if he wants to lol] or teleports Sasuke where another clone slits Sasuke's thraot with superior speed/reactions/physicality
2. The third clone is out on the look out, setting up Kunais forming s/t barriers if needed, summoning toads and stuff.
The original Minato stays back at his office sipping his cuppa