Harvey was named in the EFL Team of the Week today - that includes all of the EFL leagues including the Championship (although for some reason they've put him as a lone striker, which is bizarre).
As an MK supporter, I would say that he isn't quite at Alli's level in terms of when he played for us, but then again I doubt anyone ever will be again - with Alli we practically had a ready made Premier League player playing for us for a couple of seasons. Alli was a freak of nature in how good he was at his age and our level.
But Harvey is very, very good. He makes league one defenders look like non-league players. He was superb when he started with us earlier in the year, but even I can see an improvement in his time with us - his long range passing/long balls have been better in the last few games compared to when he started, and that was his only weakness, hence why I think our manager is right in saying a full season with us on loan would benefit him if he's getting 40-45 games with us.
You have a really talented player in Harvey Barnes. We've had lots of good loanees over the last few seasons but Harvey is technically better than all of them for his age. If I could compare him to any current Prem player, it would probably been Son for Tottenham in his style of play and position.
I'll stop arse licking now, you get the point.