I checked the roster just seconds ago, and saw that we have signed a center, Dan Gerberry. He is 6'3" tall, 302 Lbs, is 27 years old, and has one year of experience under his belt. HE went to Ball State. This is all I know about him. He doesn't even have a number yet. He could be just another "Camp Body" for the backup center role.
NOTE: I got this information from Jaguars.com.