Jamo E875 - Replacing speaker driver

Hi gang,

Long-term lurker here on DiyAudio (on my phone normally). I apologise if this is in the wrong section.

I picked up some second hand Jamo E875 speakers in Australia but one of the drivers don't have it's cone piece anymore and is completely exposed.

I'm unable to find any direct replacement part for it - would anyone have any other recommendation on what could fit as a replacement?

https://i.imgur.com/ZMNBKyY.jpg

Thanks,
Hein.