There's a lot of turnover in the NFL, it happens to every team. But perhaps no team is undergoing bigger changes from year to year than the Denver Broncos.

Not only did they fire head coach Vance Joseph and replace him with Vic Fangio, but they also traded for Joe Flacco and will presumably be moving on from Case Keenum.

Here are three burning questions for them this offseason:

3. Will they draft a quarterback high?

Even though they traded for Flacco, they aren't tied to him long-term. His salary isn't guaranteed, and they can get out of his contract at any time.

Denver is currently slated to pick tenth in this year's draft, and they've been linked heavily to Missouri quarterback Drew Lock.

The trade for Flacco certainly doesn't preclude them from using their first round pick on a quarterback, and it'll be very interesting to see what they do once they're on the clock.

2. Will the veteran players buy back in?

If the Broncos are going to get back to their former glory, it needs to start on defense.

Due to the terrible quarterback play over the last couple of years, the veterans on defense became disgruntled and a rift opened in the locker room.

Many defensive leaders like Chris Harris Jr. and Von Miller openly questioned the coaching staff, and they need them to buy back in.

They didn't respect Joseph, and commanding the respect of those guys should be the top priority for Fangio as he takes over.

1. Will they make another trade?

The Broncos have already made the biggest trade of the offseason, and they might not be done yet.

They've been linked to Antonio Brown, and could make another big splash or two. The Broncos also need help along the offensive line, and should be looking to trade for or sign an extra lineman.

There's also the possibility that they choose to trade down from the tenth pick if they're happy with Flacco, and make a deal with a team looking to move up and select a quarterback.