I think you're underrating just how good Maguire was last season. He got United and City both chasing him after that season.
i never base a players individual talent on where their team as a whole finishes/plays. For a current example, I'd much rather have Grealish than van de beek (which those are the two we seem to be looking at) and vdb has been playing at a much higher level than Grealish these past couple of years. With Ajax having CL footy 'n' all.
I wanted Maguire from Hull before he moved to Leicester anyway, so it wasn't based off one season. I had been a big fan for a long time prior to us signing him. Sometimes a player just catches your eye and, bar van Dijk at Southampton where I said Liverpool were getting a hell of a deal whilst most were laughing, Maguire is the only other CB to do that to me. So far, when you look at our goals conceded start compared to last year - even with de Gea costing us time and time again - I think I was right in my rating of him.