It's a start. Flores won't have a lot to work with, though. No cap space. In spite of all the draft choices spent on DBs, they had no personal to play a man coverage defense, and were using a prevent defense almost from the start of every game. They could stop 4th and 1, but were helpless against 3rd and 23.
The team has the same weaknesses as they have had for a decade, O-Line and Cornerbacks. Keenum spent a year running for his life, and they haven't made things any easier for Cousins. Bad things happen when he is under pressure. Opposing receivers look forward to having a career day when playing the Vikings.