NRL stars Jason Taumalolo and Valentine Holmes are expected to return to the US for another NFL trial.
The pair reportedly impressed scouts from 14 NFL teams at a work-out at Los Angeles on Saturday.
Five clubs have asked the pair to return in February just as NRL pre-season nears its end.
Both are contracted to the Cowboys and Sharks respectively for 2017 and could take part in February’s week-long NFL scouting combine with top college draft prospects should their clubs allow it.
"To come over here and have another go at a sport is another challenge for us," Taumalolo, 23, said.
Taumalolo is considered one of the most damaging forwards in the game while 21-year-old Holmes earned a national call-up for the Kangaroos after his instrumental role in helping Cronulla to its maiden premiership.
"They are big, strong athletes," a Philidelphia Eagles scout said on Saturday.
"The balance, strength, body control, the change in direction, they have that.
"Their discipline today was outstanding."