Arizona could be a potential off-season landing spot for Alex Smith

The Arizona Cardinals are in desperate need of a quarterback upgrade for the 2013 season, and there's a possibility that one of their best options may actually be on the opposing team when the Cardinals play in San Francisco this weekend. That man is current 49ers' back-up Alex Smith.

Smith has been a solid quarterback in the last two years under head coach Jim Harbaugh, but recently lost his starting position to second-year player Colin Kaepernick. Kaepernick has started each of the last five 49ers' games, and it seems unlikely that Smith will be able to earn the starting job back. It also means that Smith- who currently leads the NFL with a 70 percent completion percentage- will likely start next season with a new team.

One club that seems like a strong fit could be Arizona, which has struggled with quarterback play all season long. The Cardinals have tried out four different players under center (Kevin Kolb, John Skelton, Ryan Lindley and Brian Hoyer) yet none have seemed to work.

Arizona ranks just 28th in the NFL in passing offense, with just 2,798 yards through the air and they are also tied for the most interceptions in the NFL with 20.