Harnish is a former Norwell High School and Northern Illinois University standout player.
“Chandler's coming along well,” Grigson said during a news conference Friday at the Colts practice complex. “We all feel very good about Chandler. We always want, just like every position, we want to create competition and let the best emerge.”
Grigson did not say if he has already identified other quarterbacks he might sign before training camp. It's possible the Colts could bring in a veteran to challenge for the backup spot or possibly pick a quarterback in the latter rounds of the NFL Draft.
To hear what Grigson had to say about Harnish and the position, see the accompanying video.