Ever. In some versions of English(of which there are many many dialects) it is pronounced nearly the same as "clever" so "Ever Clever".
I'm a Kiwi, we're renowned for butchering English.
Or as we call it, Unglush.
For some fun examples, here's a video made by Australians parodying our accent[0].
And here's another one[1], although what's funny as a Kiwi is to me it just sounds like Australians saying "deck", but to them it sounds like Kiwis saying "dick". But then once when I asked my friend's Australian partner to pass me a pen once, she was confused until I pronounced it (to me) as "peeen", which felt like I was taking the piss out of her accent, but she understood me then, she had thought I was asking for a pin...
Oh, and here's one from the Flight of the Conchords playing on our accent and American comprehension thereof.[2]
I've never heard cleaver pronounced "clever" (so far in my life), but then, lever is often pronounced here in a way that rhymes with "cleaver" (i.e., "leaver" vs. "lever") so I can entirely understand that the pronunciation of cleaver could change to clever in other countries' English.
Ah, English, the mongrel cur of languages.
[0]: https://www.youtube.com/watch?v=ZdVHZwI8pcA
Specifically that both sound like kleh-ver not that both sound like klee-ver just to be clear, because as long as we're only writing text here and the very topic is ambiguity about how a word sounds, I notice that by the normal rules "clever" should be expected to sound like klee-ver, which starts to make this conversation a bit funny.
This is more a misunderstanding of how dialects work. There is no "English" if you consider British, Welsh, Scottish, and Australian English all English which most people do. There are even more extreme forms of English which all can be mutually intelligible with English, but sound very different. There is no one way to pronounce anything, except in a particular dialect.