According to Lynn Henning of the Detroit News, the Tigers could trade a starting pitcher. Tigers GM Dave Dombrowski listed off seven Tigers starters and said "trade possibilities come up" involving the team's pitching.
This doesn't mean Dombrowski seriously considered dealing pitching. The Tigers go to Spring Training with Justin Verlander, Jeremy Bonderman, Armando Galarraga, Edwin Jackson, Nate Robertson, Dontrelle Willis and Zach Miner. They have more arms than rotation spots, but this is by no means a deep rotation.