Roberto Wallace spent two years with the Miami Dolphins.
This week, the NFL player turned up for training with Breaffy GAA club as part of AIB's 'The Toughest Trade' documentary. The wide receiver has swapped sports with Aidan O'Shea.
Where O'Shea will be trying out American football is not yet known.
The first footage of Wallace adapting to the size five has been released by AIB and the 29-year-old would appear to be acclimatising remarkably well.
Just watch him smack the ball off the crossbar in the latter half of the clip.
According to the Mayo News' Ed McGreal, Wallace has been named to start for Breaffy this weekend.
New signing @Roberto_Wallace named to start for @BreaffyGAA on Saturday. Will he fill @AIDOXI’s big boots? #TheToughest @AIB_GAA #mayogaa
— Edwin McGreal (@edmcgreal) February 10, 2016
Last year, for the documentary former Premier League player David Bentley swapped with Aaron Kernan and played for Crossmaglen Rangers.
The full documentary will air prior to the club championship finals in March.