Why would someone like Jose Guillen have any type of no-trade clause in his contract?

According to Adam Rubin at the New York Daily News, Kansas City outfielder, Jose Guillen would be willing to waive his partial no-trade clause if the Royals would trade him to the Mets.

Said Guillen:

"If trading me would help the Royals, New York would be one of the clubs I would approve. I have just started a rigorous program of winter training in order to arrive in the best form possible for spring training. My mind is focused on having a great season next year and until now I believed that would be with the Royals. It would be a little unjust if they judge me for the statistics of this year, because the injuries did not allow me to play, but I have shown that when I am healthy I can produce a lot."

This is absurd.

Why would you ever give someone like Jose Guillen any kind of no-trade clause in his contract? Don't you save these for guys that are like, "good".

With an inconsistent malcontent like Guillen it should be more like, "This is your contract. If you don't like it, go somewhere else." That contract surely should not have any type of no-trade clause in it.

Who else on the Royals has a no-trade contract?

Mike Aviles?

Willie Bloomquist?

Kyle Farnsworth?

JOSE GUILLEN HAS A PARTIAL NO-TRADE CONTRACT!

I am still trying to clear my head on this. Sorry.