Forget about the 80m. That price tag is not his fault. Just compare him to his peers and if you look without bias and without agendas, you will quickly realize that Harry Maguire is our best defender. And it's not even close. Don't believe me? Well let's look at the numbers and compare Maguire to Lindeloff but also compare him to VVD. And seeing as so far this year nobody remembers how to defend (indluding VVD), we will look at the 2019/20 season:
------------------Tckl----Blk---Int--Clr---HdClr----Rec---DW---DL---50/50---ABW---ABL
Maguire-------37------6-----72---157---94-------237--240--128---8---------176-----71
Virgil VD-----23------5------40--162----83------220----239--81----3---------191------60
Lindeloff----29------1------26---122---58------215----135--78----4----------96-------50
Legend: Tckl=Tackles, Blk=Blocks, Int=Interceptions, Clr=Clearances, HdClr=Headed Clearances, Rec=Recoveries, DW=Duals Won, DL=Duals Lost, ABW=Arial Battles Won, ABL=Arial Battles Lost
https://www.premierleague.com/players/9566/Harry-Maguire/stats?co=1&se=274
https://www.premierleague.com/players/5140/Virgil-van-Dijk/stats?co=1&se=274
https://www.premierleague.com/players/5066/Victor-Lindelöf/stats?co=1&se=274
So what do these stats tell us? They tell us a lot. First off, they tell us that Lindeloff is nowhere near Maguire in any defensive category. Oh, and to be clear, I used every defensive stat available and didn't pick and chose stats to help curve the argument to Harry's favour. What else does it tell us? That over all VVD is a better defender, the stats aren't far off from each other with Maguire leading in some areas while VVD leads in others.
So in conclusion, should we sell Harry Maguire? That's a big ole hell no. You don't improve your team by selling your best players, and he is in fact our best defender whether you like to admit it or not. Should he be captain? No he shouldn't. And the recent Greece trip would have been a perfect excuse to take that away from him without controversy. But don't kid yourself into thinking Lindeloff (or even more laughable) and Bailly are better players. It's not even close...