"I don't think there is a need to explain the qualities that Jari possesses as a player or the obvious reasons for wanting to bring him to Fulham, and I am delighted that he has agreed to join us for the remaining months of the season," manager Roy Hodgson told the club's official website.
"Although he is not entirely match fit at the moment, I have no doubt that he will have a big part to play over the coming months and that we shall benefit as a team from his skill and experience."