"The Cubs desperately want another starter at the deadline, targeting Mitch Keller of the Pirates, and would include outfield prospect Owen Caissie to make it work," Nightengale wrote on Sunday. Keller has previously been an All Star, and he would be a boost near the front of the Cubs' rotation.

This article was originally published on www.si.com/mlb/cubs as Cubs Considering Putting Together Trade Package for Atlanta Braves Star. The Chicago Cubs are expected to be busy ahead of the trade deadline.

The Chicago Cubs need to add a starting pitcher. They could look to buy low on a former Cy Young candidate from the Arizona Diamondbacks.