The Chicago Cubs traded relief pitcher Sean Marshall to the Cincinnati Reds on Friday for three players, and Theo Epstein says the club probably isn't done making moves:

"I don't think we are done," Cubs president Theo Epstein said Friday after trading Sean Marshall to the Cincinnati Reds. "I do think we still need to build more depth on the starting pitching front, both in the big leagues and minor leagues.

"But it doesn't happen overnight. You have to make sacrifices. Just like moving Sean Marshall, who was certainly an asset for the 2012 club."

It's been widely speculated that starter Matt Garza could be a prime trade target. Epstein said Garza is "the type of pitcher you want to build around" while acknowledging that the Cubs are in a situation where they're listening to offers for anyone on the roster.

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