20 years old...shit, he'll need a lot of patience and afforded time. Willing to give him that, but we all need to temper expectations.
How many 20 year old defenders have taken the PL by storm? If he was that good, then everybody would be on him, especially Chelsea.
He would be a good signing based on price, age, and raw ability with Lindelof and Varane (possibly Maguire) around. And if EtH feels like he can be a flexible player like Brown, Smalling, and even Jones switching between CB and FB then settling on a position a few years later, then fine.
United need good footballers who can contribute in various situations. Seems like Timber fits that criteria and has a lot of room to improve and mature.