The 22-year-old has agreed to join the National League club on a contract that runs until the end of the current season, having spent time at Accrington Stanley where registration issues kept the wide man from featuring for John Coleman's team.
"Érico has trained with us for a few days and has shown plenty of promise," Rovers boss Micky Mellon said of the deal.
"He's a player I've known from my time at Barnsley and has good pace so will add something to the squad we already have here.
"With the injuries to Ben Tollitt and Jake Kirby we have been short of wide options, so Érico will boost us in that department as will the return of Jack Dunn following his lay-off. I'm grateful to the fans for the financial backing they've given us which has allowed this deal to happen."
Sousa will be hoping to force his way into Mellon's thoughts for Saturday's game against Braintree Town.