If the trial court is of the opinion that the verdict is so excessive or inadequate that a new trial should be granted for that reason only, it may indicate to the party or his attorney the time within which he may enter a remittitur or additur. This remittitur or additur is to be entered only with the consent of the plaintiff or the defendant, as the case may be, as an alternative to a new trial, and is to be entered only if the amount of the excess or inadequacy of the verdict or judgment can be separately and fairly ascertained. If a remittitur or additur is entered, then the court shall reform the jury verdict or judgment in accordance therewith.
La. Roads, Bridges and Ferries § 48:451.22