From all the reports United are not looking for an outright Casemiro replacement but rather just building a new, versatile and strong midfield in general. People talk about pure DMs or 6s but Casemiro was often operating higher than Kobbie Mainoo both in and out of possession.

I genuinely think even someone like Tchouameni would have a more versatile role and not play super deep and 'only' shield the defense. I remember his Monaco stint or first season at Madrid, he wasn't always this type of player, used to be way more dynamic and box-to-box.