Rat, a mate of mine was at the session that he copped the injury. It was about two weeks back (two weeks tomorrow, actually). It was the same leg that was injured previously.
He was sure it was serious - Palmer looked shattered apparently.
But some others with him thought it was’t too bad, and the news later that night and next day was that there was nothing wrong.
Still, you never know what news could be getting covered up. Though with still 7-8 weeks til the season starts there is plenty of time for him to get over something minor.