Pirates Pursuing Ohman?

The Pirates are still in talks with free agent lefty Will Ohman, according to the Pittsburgh Post Gazette. Ohman, who went 4-1 with a 3.68 ERA in 83 games for the Braves last season. What makes him particularly valuable is that he held lefties to a .200 average, and had a 2.89 ERA on the road. Ohman doesn't get many strikeouts, but he had a 1.24 WHIP and had just 22 walks. He makes for a good middle reliever who can bridge the gap between the middle and late innings for the Pirates. 
The Pirates already have four lefties fighting for spots - Grabow, Burnett, Dumatrait, and Rule 5 pick Donnie Veal - so Ohman might not necessarily make sense. 
This story was approved by MLB Rumors.