Sims will become the third member of his family to play in the annual pre-season feature match after brothers Ashton and Tariq but won't make his Dragons premiership debut until round three due to a suspension incurred last season with Brisbane.
He had initially feared also missing St George Illawarra's pre-season trials against Newcastle and Souths but received a clearance to play and intends to make the most of his limited opportunity to impress McGregor.