Players who went back to their old teams

ardiis: FPX -> NRG -> NAVI
Ethan: NRG -> EG -> NRG
Zellsis: SEN -> C9 -> SEN
pancada: LOUD -> SEN -> LOUD
keznit: KRU -> LEV -> KRU
FNS: NRG -> NRG
s0m: NRG -> NRG
runi: C9 -> C9

who else?

And only 2 of them aren't washed

The goat kenzit
And zellshits

-draken
+draken

not franchised but
Hazed: tsm -> nrg -> tsm

AstroGalaxy [#2]

And only 2 of them aren't washed

The goat kenzit
And zellshits

pancada isnt washed as much as SEN management tried

TM06Nick [#5]

pancada isnt washed as much as SEN management tried

I'll have to wait and see an actual full season of watching him play

vadoshi [#3]

-draken
+draken

mf left guild for only 2 weeks and came straight back

Retla: Bleed -> Bleed -> Bleed