Norris is making progress at Triple-A and may be a "viable option [for the big-league rotation] if the need were there," reports the Detroit Free Press.
The Tigers have already put Michael Fulmer and Matt Boyd into big-league duty this season, long before the team really preferred. So, it might take an injury or continued struggles by the likes of Mike Pelfrey or Matt Boyd to press Norris into duty there, too. The lefty is getting minor league hitters out without much trouble -- in six starts since he was sent down, Norris has a 3.31 ERA and 2.53 FIP.