If he's not "ready" after nearly five months, what the fuck:
A) is HE doing, and B) the management team doing?
Either way it's a massive mis-management of a player. If he's a poor trainer and not showing the right aptitude, attitude or ability then just fucking get rid.
Almost certainly not fully over the hamstring suffered by playing 80 minutes for Brazil after feeling it being 'tight' in the warm up (I've no idea why we don't get mega compensation for recklessly playing a player when obviously not fully fit).
He's played a few minutes at end of last 3 matches (19 mins, 12 mins, 14 mins) since returning from injury and not starting which gives the game away a bit