The short answer is no, he's the perfect fit for our system at the moment.
There are a few similar candidates, all good players in their own right but none of them offer all of the things that Souttar does.
Jake O'Brien - about as tall but not as big...still very young and no idea if Everton would let him leave on loan.
Ashley Phillips - almost as big, but nowhere near as good defensively.
Jake Cooper - shitbag.
Then there are others like Darling, Omobamidele, Dunne etc who are arguably as good defensively but nowhere near as big and imposing.
Souttar really has all the attributes we need...huge, strong, quick for his size, confident with the ball, good in the air and hard as fuck.
Replacing him is impossible, but there are options to fill the position with an equally good (if very different) player.
Very big shoes to fill