By Joseph McBride Former rugby union star Louis Rees-Zammit has been offered a deal by three separate NFL franchises, after impressing at NFL Pro Day on Wednesday. Rees-Zammit, former Wales international and Gloucester rugby player announced his decision to quit the sport in January and chase a career in the NFL. Rees-Zammit joined the NFL’s International Player Pathway program and flew to Florida to complete a 10-week crash course. The 23-year-old admitted he had never played American football before, but believed that his rugby skills were transferable to the NFL. He posted an impressive 4.4…