I am not saying they would or wouldn't... but did you see what they gave up for 1/2 year of Chapman.. Teams at the deadline who think they need only one more piece to actually win the thing, WILL do STUPID things.
Find a Cub fan that thinks giving up Torres for Chapman was a "stupid thing", and you will have found the first one.
Trading a prospect - no matter how good - to get your franchise its first ring in 108 years will NEVER bother one of them.