Gallen sustained the knock in the second half, and will now be waiting on scans for further clarification on whether or not he can line up against the Storm in Melbourne in six days’ time.
The skipper put in one of his best games of the season, however coach Shane Flanagan couldn’t confirm Gallen’s availability for next weekend after the match.
“Gal is just a wait and see. We will get a scan. Touch wood that he is okay but it is a bit unknown,” Flanagan said post-game.
“When Gal doesn’t come back on, I am real concerned. He usually can just go in and get it strapped up and battle on. For him not to come back in a big semi- final is a bit concerning.”
The Sharks would have also been sweating on the fitness of Luke Lewis, although he has confirmed to the AAP his injury is just a cork, and he’s “not too stressed about it.”