A card exiled due to the ability Constricting Sliver grants to a Sliver (including itself [C.R. 603.3b]), once the latter Sliver leaves the battlefield, will return to the battlefield under its owner's control, no matter who last controlled the permanent it used to be before it was exiled this way (since that ability doesn't state otherwise) (C.R. 610.3c). See also this thread.
EDIT (Jul. 2, 2020): One rule was renumbered with Core Set 2021.
He then casts Constricting Sliver and exhiles said creature I took.
I then kill the Constricting Sliver.
Where does the creature return to, his battlefield because he is the owner or my battlefield because that was the last zone it was in play in?
EDIT (Jul. 2, 2020): One rule was renumbered with Core Set 2021.