Obviously from this vid, Johnson is ready offensively, but defensively is where he struggled, but in all fairness the Celtic schemes on D haven't been the same since Thibs, then LFrank, left us. And now we are on to Longabardi as the defensive coach. So these things take time to learn, and this truncated season with little to no practice time was difficult. This dude will be ok, plus improve faster with Sully and Melo pushing for PT as well.