I just got a pop up on OD for a 23 year old, 6'6 , after 3 weeks of one position training, trainer level 6.
Not quite sure for your player, but I guess it will be the same. ( advantage: Age. Disadvantage: height).
I'm not sure, but I think OD is the hardest position to get a pop up, especially when height is high. Maybe someone else could confirm this?