Rolly is retired now I believe. There aren't any active locals in the UFC at this point so unless they sign some (I think there are 2 guys that have a shot), there might not actually be too many Canadians on the card. A lot of them are fighting in Edmonton in September as too so while a December fight is still possible, it might rule some of them out.
Fight Night cards might lack some of the star power but they usually have guys hungry to make a name for themselves & move to the next level. Saskatoon's event had Max Holloway in the main event a couple years ago and look at him now.