The search for answers continues in Chicago ... or well .... Iowa. Only a handful of days after the Cubs chose to scoop Luis Peralta off waivers , the team acquired another potential fit for the bullpen. Following the Athletics' decision to designate Tyler Ferguson for assignment, the Cubs decided to send over some cash for the right to add him to the mix. Like Peralta, they also proceeded to immediately option Ferguson to their Triple-A club for further evaluation. Freguson arrives in the Cubs' system with 105 MLB appearances under his belt. All games have been played with the Athletics, where he compiled a 4.47 ERA over his career. Ferguson offers a pretty deep arsenal that is headlined by his mid-90s fastball. He leans on that slightly more than his splitter, which has been particularly effective against righties and drops hard with a low-80s velo. Additionally, he's used a sinker, cutter, and change-up. Ferguson's stuff is certainly good enough to get some key strikeouts.…