Derrick Rose, even in his MVP season, was a fringe top-5 player in the league at best. In fact, in 2011, I would have put LeBron, Kobe, Wade, Dirk, Durant, and Dwight Howard ahead of Rose when ranking who the best players in the league were.
Rose just happened to play very well on a team that won 62 games when few people had them pegged to win more than 50. A team that has since proven to play pretty well without Derrick Rose, which means he probably was a little overrated in his MVP season.
Rose, if he comes back 100%, will be a top 5 PG, top 10 overall. If I had to bet, I would say that Joakim Noah will be the best player on the Bulls next season.