UPDATE: Miami coach Brian Flores says that Drake will be out for "a while" but he is hopeful Drake will be ready for Week 1. This news gives Kalen Ballage a real boost, as he's already been seeing work with the first team. Even if Drake can get back for Week 1, there's a good chance Ballage leads the way at least to start the season.
Beat writer Joe Schad did say that Kenyan Drake's injury isn't structural. That's not a lot to go on, but it's better than him being out for the season. Drake has shared work with Kalen Ballage this summer but has managed to stay ahead of him for the most part. Hopefully, we'll hear more about the extent of the injury sooner than later.