He will be found not guilty of 2nd degree murder, might be found guilty of manslaughter.
I believe he has a good chance of being found not guilty. This is a special prosecutor, the original DA did not feel he had a case to charge Zimmerman.
After everything shakes out, the evidence will show Zimmerman did follow Trayvon, but it was Trayvon who initiated first contact and gained the advantage over Zimmerman.
If it is proven that Trayvon jumped on Zimmerman and he felt he was about to lose control of his firearm, he would be justified in the shooting.
If he feared for his life or that he was about to lose control of his weapon and had no way to get out of the situation, he would be justified in gaining control by shooting Trayvon.
My lil ol pinion.