All BTV can do is tell you a trade is fair using their model.
Their model, for example, says a trade of Crochet and Luis Robert (total surplus value $54.4mill) for Abreu and Crawford ($54.3mill) is spot on. But I seriously doubt the White Sox go for that. (Maybe they do for Abreu, Montgomery, and Arias?)
I can see why they have interest in Abreu. He’s a minimum wage Gold Glove 3 WAR right fielder and last year, they had that position manned by Dominic Fletcher and Sadness…