Cronulla captain Paul Gallen can't see Sharks teammate Valentine Holmes making it in the NFL and suspects his cross-code dalliance is a ploy to bump up his NRL value.
Holmes and North Queensland's 2016 Dally M Medallist Jason Taumalolo will participate in NFL trials in Los Angeles.
The pair flew to the US together from London on Monday after clashing in the Four Nations final between Australia and New Zealand.
Both are committed to their NRL clubs in 2017 and the trials on Saturday are seen as little more than a chance to test their wares and impress NFL scouts with their athletic ability.
Gallen isn't questioning Holmes' talents, but doubts his premiership-winning Sharks teammate could make it after Jarryd Hayne struggled to fully convince the San Francisco 49ers that he could.