Try to bench him and assign points to defense and physical.

If you push the attack too much a player's skill balance will break.
For strikers I suggest defense should never be 5 points below attack, while physical should never be 3 points below attack skills.

Upping high physical also gives added benefit of reducing chance of injuries.

I figure D and GK are the only players that can have 20 points difference in stats (attack being 20 points lower than defense and physical) and won't break.