If they can live with Burger’s glove I wouldn’t mind him. Lots of power and years of control. Just not sure about him at 3rd. Another guy, if he can play 3rd, would be Polanco. If the Cubs think he can handle third he might be my top choice because he might not cost as much as Burger, in the way of assets.
I would rate Polonco 1st, maybe Moncada and then Burger, when taking into account salaries, what yiu lose to get someone and time you can have him.