Fulham forward Bryan Ruiz has joined Dutch side PSV Eindhoven on loan until the end of the season, the Barclays Premier League club have confirmed on their website.
Ruiz moved to Europe in 2006 when he joined Gent and went on to average almost a goal every other game during his spell in Belgium, before replicating such form at Twente.
He will lead Costa Rica in to the World Cup, where Jorge Luis Pinto's side will come up against England, but it remains to be seen if he will return to Fulham next season.
Meanwhile, West Ham have made an official complaint to the Premier League following comments made by Fulham manager Rene Muelensteen in relation to an attempt to sign Hammers midfielder Ravel Morrison, Press Association Sport understands.
Morrison, 20, has been one bright spark in West Ham's otherwise poor first half to the season but has just 18 months remaining on his contract at Upton Park.
The England Under-21 international, who worked with Meulensteen when the Dutchman was assistant manager at Manchester United, has scored five goals in all competitions so far this season for Sam Allardyce's side.
West Ham have flagged up Meulensteen's comments following Fulham's 3-0 FA Cup third round replay win over Norwich on Tuesday evening after he suggested Morrison was keen on a move across London and that an opening bid had been rejected by the Hammers.
"Yes, we did make a bid," he said.
"Yes I think he does want to come. He would add pace, power, unpredictability and a real attacking threat.
"I don't know what the situation is now, because that's left with [club director] Alistair Macintosh.
"We got knocked back, it got rejected, and so we need to review it and move on. I've explained how I think about the situation [to the Fulham board], so we'll have to wait and see what happens.
"I've known him for a long, long time, but the thing is this: we have to wait and see how the club takes it forward as to whether there's another bid.
"He would bring youthfulness, energy, unpredictability, attacking strength, loads of things. I've made my desires clear so I'll leave it up to the relevant people to take forward. I don't know the ins and outs."
In other news, Carlton Cole has signed a new 18-month contract with West Ham..
"He would add pace, power, unpredictability and a real attacking threat" - Rene Muelensteen
With Morrison under contract at West Ham, the club's complaint is likely to surround Premier League ruling T.8 - which reads:
'A statement made publicly by or on behalf of a Club expressing interest in acquiring the registration of a Contract Player or by a Contract Player expressing interest in transferring his registration to another Club (or club) shall in either case be treated as an indirect approach for the purposes of Rules T.3 and T.6.'
Both rules T.3 and T.6 relate to a club making an approach for a player under contract or the player, or his representative, approaching clubs in the hope of instigating a possible transfer.
If the Premier League deems Fulham are in breach of the rules the club could face a reprimand or fine - it is also possible the case could be referred to the Football Association.