Actually no there cannot.
Multiverse theory is the beginning thread. All universes branch off from this thread, so there cannot be a multiverse without multiverse. However there might be a multiverse where there is no possible way to determine whether there is one or not.
I'm a philosopher not a physicist, so I am not talking about physicist's theory, of which I know nothing. Multiverses are A FACT, so simple and plain I am actually amazed there are people who even doubt it. In the infinity of time in "svemir"as we call it here (all there is, all the "world",rough translation) there simply MUST be everything it could possibly (or impossibly from our point of view) be. Simply everything must happen. But, and as in Hitler's buddy Rohm's case, it's a big but*, that's actually the catch.Even here"in our universe"as we can testify there are actually billions of sentient beings that doubt that. And we even have uncontacted tribes that don't know what part of the day it is,cause they simply don't have concepts of time,or even being or even thought.We can have whole universes of beings that know but choose not to believe in multiv.but also universes that can't even comprehend.Ever.But that doesn't stop Mv's factual existence. Not here nor there. Simple as that.
Multiverse theory is the beginning thread. All universes branch off from this thread, so there cannot be a multiverse without multiverse. However there might be a multiverse where there is no possible way to determine whether there is one or not.