Jan 09, 2007 11:20 AM EST

Johan Santana's contract, it has been learned, includes a clause that could hinder the Twins from trading him this year if the club believes it won't be able to re-sign him for 2009.

Now, Santana cannot be traded to any team in 2007 without his approval. His price tag could reach $20 million a year on the open market after the 2008 season.

Via Pioneer Press