The former Warrington Town midfielder has joined Rylands on a one-month loan deal.
Vassallo made 110 appearances for The Yellows over four seasons.
He netted 12 goals for Rylands' neighbouring side and later joined Southport during the summer of 2020.
The 25-year-old could go straight into the Blues team ahead of their fixture on Saturday against Matlock Town.
Jody Banim’s side will hope for a win this weekend following their narrow 2-1 defeat to Lancaster City earlier this week.
Photo credit Southport FC
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