MINNEAPOLIS — The Minnesota Vikings and the Buffalo Bills agreed on a trade Wednesday that will send quarterback Matt Cassel to the Bills next week and give the Vikings extra draft picks.

The Bills are sending two undisclosed draft choices to the Vikings and getting one undisclosed pick in the deal announced six days before NFL transactions can begin with the start of the new league year.

The trade can’t be completed until then, but the announcement wouldn’t have been made if there were any potential roadblocks pending.

The trade also wouldn’t have been initiated had the Vikings not been confident in Teddy Bridgewater, the first-round draft pick who took over as the starter in the third game of last season after Cassel broke his left foot.

Cassel spent two years with the Vikings, taking over in 2013 after Christian Ponder struggled.