The problem with Hojberg is that I just don't see what he does well.
He doesn't pass well, he doesn't protect the centre halves well, he's not athletic, he is a trier and gets about the pitch, but he's not a stand out player. A definite upgrade from Winks and Sissoko, but that's about it.
No doubt we'll get plenty of stats about "tackles" and "pressures" and "xG" and "H20" and shit.
I think what he does "well" is his attitude, he give it all and that has real value.
Otherwise, instead of looking for stand out attributes, perhaps think of him as doing everything "well enough".
He is a good footballer, able to do everything to a reasonable standard, and players like that have value to a team, especially when they bring intangibles like attitude as well.