when going, Guild > Territorial Domination you could see an 'In Contention' entry.

First, it would be better if it where an seperate entry in the Guild listing, so it could be noticed very quickly with a red count tag to it.
Second, it would be nice if R4/5 could clear it from the list, if it where a single tile or if there was an agreement over the tile takeover.
Third, this In Contention button would be high in the list, so you don't have to scroll down.