I think covid threw a wrench in their plans. They had to draft McCoy when Unger retired. When Ruiz was drafted, it looked like the plan was to move McCoy to RG and let Ruiz play his natural position of center. Then the covid year happened and those plans were thrown out since it would be nearly impossible for those two to switch positions with no time to train at them. McCoy then cemented himself at C leaving Ruiz to try and play/learn RG which he has not been good. It's probably best to move on from him via a trade to a center needy team. Player for player trades aren't that common, but a center for guard, center for TE, center for WR wouldn't be bad. A center for draft pick is probably the more likely option.