Jan 20, 2010, 2:35 PM
28-year-old Gambian international, who can play on either wing or in the centre
of midfield, joined
Sonko told the Tranmere website: "I had the choice of three or four clubs but I saw Tranmere as a progressive and ambitious club.
"I think my speed and directness will add pace to the team."
not offered a new contract by
Tranmere manager Ronnie Moore said: "I'm delighted to sign Edrissa, he's a talented player.
bags of pace and the tricks to beat a defender, he's played across
his career at Real de Banjul, in his home country, before moving to Belgian
first division side
He moved to Dutch side Roda JC in 2000 before having a short spell at Greek side Xanthi in 2007.
told BBC Radio Merseyside he is now hoping to make his debut in Saturday's
"It's going to be a big game and a tough encounter. We will try to learn from it," he said.