The 49ers are going to have a decent amount of player turnover in the next few years. Its pretty much expected that one or both of Iupati and Crabtree won't be back. They drafted Brandon Thomas who tore his ACL working out with his Saints, otherwise he would of been a high pick. He will likely step in to replace Iupati. Crabtree is a toss up. I think he won't be back and he is less a necessity to them since they signed Stevie Johnson. Several players are getting up there in age and will be on the wrong side of 30 when their contract is up. I am not saying the 49ers won't remain good, just it will be much more challenging for them to stay good and replenish then the Seahawks. Their best players are further along in their life cycle. This is why you saw the 49ers make so many draft picks instead of trading up for one player. They need to replenish and retool. They will still have good young talent but its not likely they will keep all this elite talent.
Kaepernick will cost a good amount of salary cap so the future success of the organization relies on his continued development and the development of the run game.
Kaepernick will cost a good amount of salary cap so the future success of the organization relies on his continued development and the development of the run game.