Gezer: Canaanites not all Expelled From, but Made to Pay Tribute (Taxes)

But they did not drive out the Canaanites who lived in Gezer. So the Canaanites dwell among the Ephraimites to this day, but they are forced laborers.

Ephraim also failed to drive out the Canaanites living in Gezer; so the Canaanites continued to dwell among them in Gezer.