Saracens are set to add USA international Thretton Palamo to the squad on a short-term deal, according to Sky Sports News.
The 25-year-old back can play in the centre or on the wing and is expected to join the Men in Black on a three-month deal after impressing on trial in Minnesota in April.
Palamo impressed the Saracens staff at the Rugby Combine in the USA, designed for players who have been cut from the NFL or of missed out on the College Draft.
Having started out by playing rugby union, Palamo spent a season with Biarritz before returning the States to study at the University of Utah.
The 6ft3in back is the youngest player to ever appear at the rugby World Cup, having turned out for the USA at the 2007 tournament having just turned 19.
California-born Palamo had previously represented Samoa - the country of his father's birth - at youth level before making his debut for the USA.
A US Sevens international, Palamo represented the Eagles in the Pacific Nations Cup in June.