Marvin Harrison Jr. vs. KC Concepcion vs. Lemon

I have Marvin Harrison Jr. I'm considering trading to the 1.06. I am sure based on info I have that either KCC or Lemon will be available at 1.06.

The person at 1.06 made me an offer of 1.06 + Coker for MHJ.

Is this a no-brainer or is the risk that KCC/Lemon turn out to be JAGS and MHJ finds it in year three with a new system not worth the risk?

Thanks.