Not necessarily. It is in the best interest of the team if Bell can play LT this year, because the rest of the line is hinged upon that position. If Bell can hold his own at LT, that allows for our RT position to be sured up with Walker, our RG position sured up with Butler, and we get to keep that starting tandem in place in their same positions.
If Bell doesn't play LT, we are forced to hope Langston can play the left side, and we are forced to hope Butler can play tackle on the right side, and we're forced to hope the two rookies can play on the interior at a high level.
We all better be rooting for Bell this year, because it drastically effects the shake up of our line. I would even listen to the argument that having Bell on the left side even if he's a liability might actually be better than having both Walker, Butler, and the rookies not do well. That would be 1/5th of our line sucking as opposed to 4/5ths. Not saying I want to throw Bell into the fire, but it would definitely be a huge help to every individual position on the line if he can step in.