He's on a deal with his home town club until the end of the season.... https://www.stockportcounty.com/experienced-defender-signs-on/ Came on for the second half at the weekend in their 3-0 defeat. He only played 11 games last season for Swindon before getting released.
You can tell Williams needs coaching and isn't a natural. Fryers had finesse and was a natural on the ball. That would be the prerequisite for any player coming to the club.