Wigan have confirmed the signing of striker Mauro Boselli from Estudiantes for an undisclosed fee.
Boselli, 25, has agreed a four-year contract at the DW Stadium after scoring 32 goals in 52 appearances for the Argentinean club.
Roberto Martinez told the official Wigan website: "Mauro is a goalscorer who lives to put the ball in the back of the net and he is somebody we have been looking at for a long time.
"At 25 years old, he is at a perfect moment in his career to come and play in the Premier League, and he has all the right qualities to make his mark at this level.
"He is a clever player, a natural finisher who can cause havoc in the penalty area, and he gives the team some great new options with the variety of roles he can play. We want him to reach his full potential here and bring plenty of smiles to the Latics fans."
Martinez added: "These deals with clubs on the other side of the world are very difficult to complete and it has taken many hours of to-ing and fro-ing until everything was settled."