middle ground

US /ˈmɪd.əl ˌɡraʊnd/
UK /ˈmɪd.əl ˌɡraʊnd/
"middle ground" picture
1.

a position or solution that is a compromise between two extreme or opposing positions

:
They tried to find a middle ground in the negotiations.
It's hard to reach a middle ground when both sides are so rigid.