When Troy Woolfolk switched from cornerback to safety this spring, it helped alleviate one depth problem in Michigan's secondary - and helped create another.

Michigan coach Rich Rodriguez said Tuesday depth in the secondary remains one of his chief concerns heading into fall camp. Donovan Warren and Boubacar Cissoko are the projected starting cornerbacks, with Woolfolk and Michael Williams the potential safeties.

"The secondary is not nearly as deep as it needs to be, and certainly we’re going to address that in recruiting," Rodriguez said.

Several incoming recruits should play immediately in the secondary. Safety Vladimir Emilien was one of seven freshman on campus for spring drills, and highly-touted recruit J.T. Turner will begin his college career at cornerback.

“We'll start him at corner because there’s such a need there," Rodriguez said. "We have a need at safety, too, but normally if you have a guy, you try to put him at corner and if it doesn’t work there or if you need help you can move him into safety. So right now the plan with J.T. in camp is to work him at corner knowing that we probably could move him to safety as well."