With Rey Maualuga forever being a huge question mark, it'd be good for Cincinnati to bring in a young guy to be developed by Paul Guenther, the Bengals' new defensive coordinator.
James Morris doesn't bring a whole lot in the way of power or excessive speed, but he brings three-and-a-half years as a starter at Iowa and spectacular vision. Unlike Maualuga, he is good in zone coverage, so he could be useful guarding against Dennis Pitta and Jordan Cameron.
As for Michael Schofield, he's good against the run and can also serve as backup on the offensive line. Kevin Zeitler seems to be the only stone-cold lock on the line for the future, but the left guard position remains a mystery.
Clint Boling is the current starter and should be backed up by Tanner Hawkinson. Boling, while decent, is not an impact player, and an upgrade is certainly available. That could be Hawkinson, but Schofield should come in as insurance.
If nothing else, he could also fill in if there's a case of the injury bug. It's not to make him sound like a last resort—he's a strong lineman who drives well with the lower part of his body. He's not a project and would be a suitable replacement should it become necessary.