Damsel in distress!

Hey guys, very new to the forum and very new to honda's.
So i was gifted an old 2004 450fe foreman by a farmer after my old klf300 gave up the ghost.

I've since found that the front prop is shot and need to replace it.
I can't seem to find one anywhere for sale, so my question is are there any other props that are compatible say from a 420 or a 500.

I'm based in the uk and if i can get one my uncle will swap out the broken one for me.
I need the quad for transporting food and water to my livestock, so am desperately trying to get it sorted.

Thanks in advance

Pic of offending prop is included.