Blackburn have signed Barcelona striker Ruben Rochina for an undisclosed fee.
The 19-year-old has signed a contract to keep him at Ewood Park until the summer of 2015.
Blackburn boss Steve Kean told the club's website: "Ruben is a genuine addition to our senior squad, a young player with great ability who can play in a number of attacking positions.''
Rochina has scored twice in 13 appearances this season for Barcelona's B team, who play in the Spanish Segunda Division. Born in Valencia, he was part of the Barcelona youth system for nearly seven years after joining them from his hometown club.
Kean said: "He joins our elite development group alongside the likes of Phil Jones and Junior Hoilett and will compete for a place in the team from the word go.
"The fact we are able to sign young players from the likes of Barcelona is further evidence of the owners' intention to push the club forward.
"They told me they were keen to add to our youth development group and this is a significant and exciting signing for us.''
Rochina was swiftly followed through the door by Argentine playmaker Mauro Formica, who Rovers signed from Newell's Old Boys.
A product of Newell's academy, the 22-year-old is highly rated and is the club's fourth January signing.
Kean said: "Mauro is a fantastic talent, an attacking player who has been in great demand. He has great technical ability and is a typical Argentinian with a bit of fight and a bit of devilment in him.
"He's an exciting talent and I must say that this transfer window has progressed really well for us."
Meanwhile, El Hadji Diouf has joined Scottish giants Rangers on loan for the rest of the season.