Fulham have completed the signing of USA striker Eddie Johnson after he was granted a work permit.
Fulham hope Johnson (left) and Litmanen can help them avoid relegation
The 23-year-old has joined from Kansas City Wizards on a three-and-a-half-year deal with the Craven Cottage outfit.
"At 6ft 1in Eddie can complement the other forwards and gives us another dimension to our attacking play," said Fulham boss Roy Hodgson.
Meanwhile, Fulham hope to sign former Liverpool and Barcelona striker Jari Litmanen on a free transfer.
The 36-year-old was Finland captain under Hodgson, but had his contract terminated at Swedish side Malmo last summer because of an ankle injury.
Litmanen, who won the European Cup with Ajax, is training with Fulham.
"We know he's got the quality. It's just a question whether the six- or eight-month lay-off has made a major difference to him," Hodgson said.
"My theory is great players don't forget how to play. If they are fit enough, they can do what they are good at.
"I am very optimistic he will be able to join us."
The Finnish Football Federation had earlier reported that the Premier League strugglers were close to finalising a deal.
"Jari has been working hard lately and he is fighting fit," Hodgson was quoted as saying by the FFF website.
Fulham have already signed Norway defender Brede Hangeland in the transfer window and have agreed a fee of £5m with Watford for striker Marlon King.
They are also reportedly still keen to sign Rangers striker Daniel Cousin, despite having a £2m bid rejected by the Glasgow club.