I think having Lolesio on the bench is a good shout if To'omua and JOC (James O'Connor) are both starting...
He’s the form 10 so far, can play 12, and either way will be partnered with an experienced player.
Give him minimal minutes to start with and slowly introduce him earlier with each match.
It is definitely between him and Harrison (both have real strengths), but I expect both to be in the squad