Reggie Bush is the most high-profile free agent that the Detroit Lions are expected to pursue this year. They have been connected to Bush for months, and although much of this is based on speculation, the Lions are believed to have "real" interest in him.
Right now, it's not known if the Lions have made contact with Bush's agent. However, three teams have already expressed "significant" interest in Bush, according to the Miami Herald's Armando Salguero. The three teams are a mystery right now, but it sounds like the Lions are going to have some competition for Bush.
A source very close to Bush tells me three teams have been talking to Bush agent Joel Segal and that money involved in those talks is significant. The source would provide no details of the money or name the teams but it is clear the interest in Bush isn't just of the making-a-call variety.
The Miami Dolphins apparently aren't one of the three teams, so at the very least it looks as though Bush will be playing for a new team in 2013. Whether or not that team will be the Lions remains to be seen. He is certainly an ideal fit, and I'd bet that the Lions are one of the three mystery teams. However, this will likely come down to what kind of money Bush is seeking and what the Lions are willing to offer.
One thing that is important to remember right now is that reports like this could be based on information that was released with the intent of driving up a player's value. Bush's agent almost certainly wants to create a bidding war to drive up his client's price, so you do have to take reports like this with a grain of salt, especially since we're only in the negotiating period right now.