While Francisco Liriano had a good season in 2010 (14-10, 3.62 ERA) it is fair to say that he has only had one great year, way back in 2006 (12-3, 2.16).
Tommy John surgery in 2007 limited him severely for the following few seasons, but he is still regarded as a top starter in the American League.
Contract negotiations between Liriano and the Twins broke down before the season started and the lefty has struggled in the young season with a 7.40 earned run average.
It would be somewhat surprising if he were dealt, however. He is under contract through 2012, so the Twins could keep him for another year if they so wished. If they get an attractive package, though, Liriano could find himself in another uniform by August.