The former winger for Gloucester, Wales, and the British Lions unexpectedly gave up rugby in January to play American football.
The 23-year-old is finishing off a ten-week International Player Pathway (IPP) training and development program in Bradenton, Florida.
The goal of the program is to get athletes interested in American football who are not from the US.
Along with fifteen other guests, Rees-Zammit will attend a Pro Day on March 20. It’s a skill display where scouts from NFL teams will evaluate whether or not to offer them a contract.