Here's an interesting thought... are there any top-flight centers in this year's draft class? If Locklear can return, OT won't be as big of a need (especially with Mosley ready to backup, we wouldn't need Diehl anymore). But Baas has been way underperforming ever since we got him. I've seen some specials that say that a good C is important on the O-line, as he is often also responsible for checking blocking assignments for the OL and dealing with any mismatches the D-line tries to create.
Honestly, I believe they may use Mosley at Guard, not at Tackle.
They have Brewer and McCants groomed for Tackle.
I think Locklear was serviceable at RT. I would rather draft an interior OL G/C mauler.