I'm gonna call it, though tbh I've always had this inclination towards Blackett but one day he might be our next Smalling. The guy has been shoe horned into left back position simply because he is left footed but his attributes are almost uncanny to the young Smalling that joined us.
Footballing intelligence seemingly low check, tall AND wide check, strong check, got pace and can cover the ground well check, long stride check, doesn't seem to drop his head (despite poor performances) check, will continue playing his game (like Smalling didn't have much awareness) for worse or good check, has poor passing decisions check, played in a variety of defensive positions and sometimes looks reassuring and sometimes woeful check etc etc.
Basically like Smalling he's an athletic beast and seems to have that 'yes boss I'll run through the brick wall' dumbness (lolol) that could lead him well to be very coachable.
We just need to keep him around the squad and stop faffing about with his position. He is built for the centre back position. Will he ever be a classy player, nope, but Smalling has shown how useful and dominant you can be by playing to your strengths.
We may not see this for a good couple years and everything falls into place though he is still only 21 so I have hopes he will at the minimum turn out to be a good squad player for us; like Brown, Silvestre etc was and if he aims higher, he should take inspiration from Mike.