The Cottagers have been short of options in goal this season, following an injury to first-choice Antti Niemi and with a lack of cover for Tony Warner in the Finn´s absence.
Fulham manager Lawrie Sanchez believes 37-year-old American Keller, who has been playing most recently for Borussia Moenchengladbach, could be the right man at the right time for the Barclays Premier League club, saying: "I´m delighted that Kasey has joined us, and I´m sure he´ll be a great addition to the squad."
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