There's also, in his mind (rightly or wrongly), depriving a rival struggling club of goals.
The thing is though if we move on to another target (Remy) then all he has done is rejected £21m for player they don't play, and haven't even succeeded in placing us in a weakened position.
Yeah that's a point, if we did get Remy instead because they refuse to do a deal on Berahino then Peace would probably have helped us in the short term. Obviously long term Berahino is the better option, but just for this season and what will keep us up Remy is the absolute best option IMO
The only thing about Remy is that he is more likely to get injured.