It looks like Bell will be almost ready for camp meaning probably not the 1st week ir so, and Ladarius Green is looking like he won't be ready either...I'm more concerned about Green than Bell actually. Bell we know what he can do so imo it's just a matter of him getting the knee back 100%, and getting used to getting hit again.
Green is another story...he needs reps with Ben and the OFC more than any other player imo....I hope both are able to participate sooner rather than later, but especially Green.