Livan Hernandez a Twin

According to Rosenthal... 813162&ATT=49

Livan Hernandez has been a below average pitcher the last two years.  He doesn't strike anybody out (3.9/9IP) gives up a lot of home runs, but averages over 6+ Innings per start.

Is it this year's Ortiz, Ponson, et. al., or will it really "stabilize" the rotation?  Most importantly, which promising young pitcher does this push out of the rotation?