Hi, I've posted before about my Robinia tree which appears to have succombed to the disease that has destroyed a great many of these trees recently 
Although after a slow start, it has actually been very beautiful and made a lot of growth during the year almost doubling in size (it is still a young tree). However, brown patches appeared on the leaves similar to the beginning of this disease and they have mostly now fallen off.
I am wondering whether to remove the tree now or whether to give it another year to see what happens and potentially have to pay a tree surgeon to take it out if it gets much bigger?
I love this tree but I need it for a privacy issue so would want to get started with another tree asap so it doesn't leave a gap for too long!
Many thanks for any advice 