It’s because they haven’t committed to anything yet.
It’s a good thing, to keep one’s options open. And for as much criticism as they receive on a yearly basis, the Washington Redskins front office has done a good job keeping its options open this offseason. Earlier in the year, they swapped picks with the Broncos to acquire Case Keenum at a low-cost. Now, they have a buffer at the quarterback position, if Plan A becomes Plan B, and Plan B becomes Plan C, and so forth.
But it appears as if the Redskins have lots of plans to scrap before eventually reaching Case Keenum as their starter.