Help with tree ID

[Snorlax99]

Hello all. This tree has existed in my parent's back yard in Cape Town for the better part of 40 years. It has never flowered or fruited in all of that time.

We have absolutely no idea what it is. Can anybody assist?

 

[Snorlax99]

 

[Snorlax99]

 

[Shibui]

Trunk and bark looks so much like many of our Aussie Eucalypts but leaves are entirely wrong and I have nothing further to offer. I hope someone else recognizes it.

 

[Snorlax99]

I also thought Eucalyptus but no trademark smell in the sap and the leaves do not match. Thanks for having a go at it though.