Free agency is very deep at corner this year. Jaylon Johnson, L'Jarius Sneed, and Kendall Fuller could be signed and instantly be the CB1 on this team, and there are probably a dozen guys who could be signed to be CB2 across from Sutton (who will have hopefully figured it the **** out again by August).
Given the goal next year is a Super Bowl, I don't think they will take a corner at #29, unless one of the top ones fall. Corners more often than not need time to develop (even more so than linebackers). I think they might take an heir apparent in the 2nd or 3rd round, but I think it'll be a plug-and-play edge rusher or DT at #29.