The trade value of Eduardo Rodriguez is limited by his chronic knee problems that have resulted in a significant surgery this month. Matt Barnes is a mediocre 27-year-old reliever. Each comes with four years of team control.
The White Sox, with only $15 million committed to 2018 salaries, are among many clubs that can afford Jose Abreu's projected 2018 salary of $17.9 million. With two years of team control, Abreu offers substantial surplus value after posting 4.1 fWAR, valued at $33.1 million, this year.
In a trade of Abreu, I suspect the White Sox will receive far better offers than Rodriguez, Barnes and a prospect.