Broth runs deep through our veins.
The bishopric of Tours OR The Bishop of Tours
My guess about the tile effect:
"Move meeple to Tours, then move the meeple to another adjacent city by water or road." (with or without collecting goods, not sure)
So this is quite useful when you want to quickly go to another direction than you started with. Let's say, you went full south and now can easily go middle en from there anywhere you like.
My second guess but somewhat unlikely I think:
"Move meeple to Tours, if already there move to anywhere else on the map."
This requires a double activation of this tile to make it useful.
I emailed Matagot about the rules. It is the second guess you posted. You can move your merchant to Tours or move it from Tours to any city.