Yeah, he had some season - 21 goals (19 league) for relegated Chesterfield in 17/18 and, like you said, has struggled a bit since then (edit: saw DJC's post, so maybe it's been ok).
I'm not blown away, but we know how tough the market is. We need the back-up/support/competition for JOb and Mor-I-as, so keen to see what he can do.
Looking at Twitter, plenty of NCFC fans seem to want him still, albeit that's not a great level.