Monster reborn and junk archer...?

Well, I want to know that if opponent use monster reborn special summon a monster from my grave to his side, and I use junk archer banish that monster, at end phase, the monster will return to opponent side or my side?

"Once per turn you can select 1 monster your opponent controls. Remove that monster from play. During the End Phase of this turn, it returns to your opponent's side of the field, in the same Battle Position."

So... regardless the monster is banished to opponent and my banish zone...?

It will return to your opponent's side of the field even if it's your monster.

Well... thanks for clarify the problem...