Ferguson, who parted company with Posh in November, has taken over the role at Deepdale which was vacated after Alan Irvine's sacking last week.
The 37-year-old has signed a three-and-a-half-year contract with the Lilywhites.
Ferguson, who parted company with Posh in November, has taken over the role at Deepdale which was vacated after Alan Irvine's sacking last week.
The 37-year-old has signed a three-and-a-half-year contract with the Lilywhites.
