I said the other day that I think Niasse would tear it up in Scotland. He is big and physical, and most importantly, unpredictable. I think he would be a handful, and while he may not be the most elegant of players, he can be effective and seems to score goals when given a decent run of games.
I genuinely can't say the same for the ghost. I think he would struggle anywhere that he actually has to show up and be counted. He chases shadows, and his set pieces are pretty poor as well. It has nothing to do with pace, because he's never had any. It's about bottle and enthusiasm, and I'm not sure he's ever had any of those either.