Jamal Gadson was charged with second degree murder in the shooting of Jermaine Stubbs in July.
He rejected a plea bargain back in October.
Gadson's attorney, Leland McCormac says after looking at evidence and considering that possibly three eyewitnesses were going to testify in trial that it was Gadson who shot Mr. Stubbs, Gadson decided to take a plea bargain.
Mr. McCormac says if found guilty of second degree murder, life in prison was a possibility for Gadson.
By pleading to manslaughter, Gadson will face 20 years in prison.
He must do 85 percent of that sentence before he's eligible for any release.
Officials say Stubbs was shot near the 600 block of Lenox Ave. after an argument between Gadson and Stubbs.
Officials say Gadson was found in North Carolina before being brought back to Utica.