Yesterday, Sports Business Daily reported that "Fox is close to signing a deal that gives it half of the Big Ten’s available media rights package..." This would be a huge shift for the Big Ten Conference; while Fox already owns a majority of BTN, they currently only have the rights to the B1G Football Championship game, while everything else is shown on the ESPN networks, BTN, and CBS (basketball only).
Nothing has been officially confirmed, as the terms of the deal are still fluid, but it appears that Fox will have the rights to around 25 football and 50 basketball games, which will be carried on FOX and FS1 starting in the fall of 2017.