Hi Nick
As Christian said it will be very very hard if it is more than a top and bottom layer and how much money do you want to spend finding out?
But Nice! I like these types of repair, so fulfilling when you get it done
Now lets assume it is a part of the board that only has a top, or and bottom tracers
You can get "Wire glue" eBay.
You will need a magnifying glass
and a steady hand
and get creative it can be done if the phone is worth it to you