Not just Roberts (x2) we have had Nmecha, Van le parra, Batth and Morrison all with very few appearances for us.
I guess it will depend on whether the player is a youngster looking for experience, a lad looking to put himself in the shop window or someone they just want off the books.
Redcar R I don't think it is down to the boots. Browne stuck his leg well into the turf with an apparent intention of creating a "solid hip " to lever the player away. We've all done it !
I was quite surprised that he got injured and tended to assume that it was because he'd used his inside leg to make it less obvious.
I've seen a knee go back in again on its own but it is an odd and very upsetting sight to see a knee cap next to where is should be
As far as I have read all countries have been put into different tiers and players are awarded points according to league, international games, caps etc. It doesn't matter if you are EU or non-EU. It's easier for some south american players than before Brexit but certainly not easier than a European.