For £50m I'd say that's a great bit of business for the Albion.
We have:
Dunk
Webster
Burn
Veltman
In the existing squad who can play CB (With March back Veltman will be freed up).
Plus
Clarke,
Ostigard
Lars Dendonker
Paul Van Hecke
I might have missed one? Plenty of cover.
That...
It would be nice to watch a few more England matches (possibly World Cup qualifiers) and see Brighton's Ben White playing, rather than Arsenal/Liverpool/Man City's Ben White.
I've seen mention that Dunk didn't impress in the training camp when he was selected. I have no idea is this is true, but that video of Rashford making him look foolish can't have helped.