Portsmouth have signed 18-year-old Swiss striker Danijel Subotic from Basle.
The forward has agreed a three-and-a-half-year deal at Fratton Park for an undisclosed fee.
“He was recommended to us so we brought him over for a few days’ training and he did well,” Portsmouth boss Harry Redknapp told the club’s website.
“We’ve taken a gamble on him and hopefully he’s one for the future.”
With John Utaka, Kanu, Sulley Muntari and Papa Bouba Diop all heading to the African Cup of Nations, Redknapp desperate to reinforce his squad during the transfer window.
“We need to get some people in but it’s hard,” Redknapp added.
“You look around and who is going to loan you anybody? The only place you might get a few loans is abroad.
“We need to strengthen out wide and up front in particular.
“Even if everyone is fit, we’re low on outfield players capable of playing in the Premier League.
“So we need to get three or four in really to help during the games that the African players will miss, but it’s not easy to find them.”