Livingston manager David Martindale is "relishing" the opportunity to work with Sebastian Soto after signing the United States striker on loan from Norwich City at the second attempt.
The Scottish Premiership club were beaten to the 21-year-old's signature by Porto's B team in the summer.
But he played only eight times, scoring once, in Portugal's second tier.
"He comes with a fantastic CV and I'm looking forward to seeing how he adapts to Scottish football," Martindale said.
"Sebastian was on our radar in the summer, but we missed out to FC Porto, but it hasn't quite worked out for him over in Portugal.