Gale, 24, has not featured yet this year having undergone ankle surgery during the off-season.
Coach Francis Cummins said: “Luke’s back in full training now, so we’ll see what happens with selection and where he is this week.
“He’s currently training with the Under-19s – he trained this morning with them and will be with them again tomorrow.
Gale made more than 70 appearances for Harlequins, as they were then known, between 2009 and 2011.
He came through the academy at Leeds, before catching the eye in Doncaster’s National League 2 winning campaign in 2008.