Formosan Ash invasive?

We have what I believe is a Formosan ash approx 6m from our house. I’ve noticed the roots are shallow and look quite invasive. To make matters worse, its been planted (or self sown) next to a sewer inspection pipe. The previous owners of 20 years crammed so many large trees together it’s insane (was a a clear block 20 years ago) Thoughts? Should it be cut down?