De Jong is constantly babysitting not only for Ajax attack, but also for Blind, who is crap and constantly out of position. Arthur is also good defensively, albeit he needs to improve his positioning. Our wingers need to track back whether we have babysitter or not, so if Demebele doesn't work hard he indeed should be dropped. Coutinho imo is okay with his pressing and workrate. Messi was never defending to begin with. He only tracks back, when he's angry. Suarez should be get rid off.
So yeah, i can see problems right now and especially under clueless coach, but i refuse the idea that one of our CMs should be permanently tied to babysitting function. Rakitic also has more defensive duties, because as said, Busi isn't "real" DM and has to also be sweeped after a lot, when he fails his interception check. De Jong and Arthur are both much faster than him and great tacklers.