Petersen low end 7* now, but we know his growth has slown but as he loses some stars over the next few seasons theres that little bit of encouragement of some faster training while he is 6* for age 27/28. If no PT given to Petersen this or next season chances are he may get a decent gain at 5* back up towards 6* again.
But, like we agreed theres more efficient players to power train than Petersen over the next few seasons.