Arryn Siposs in action during his first season at Auburn. Picture: @arrynsiposs Instagram

FORMER St Kilda forward Arryn Siposs is on the verge of becoming the fifth ex-AFL player to realise his NFL dream, signing as an undrafted free agent to the Detroit Lions on Sunday morning.

Siposs was overlooked throughout the three-day NFL Draft, with only two punters selected in the entire seven rounds, but was among the first players to sign with a team as an undrafted free agent in the aftermath.

He will likely battle with the experienced Matt Wile and the relatively untried Jack Fox for the starting role at Detroit, after the Lions moved on from veteran punter Sam Martin last month.

Arryn Siposs celebrates a goal against Carlton in 2013. Picture: AFL Photos

Siposs revealed last week that the New York Jets and the Atlanta Falcons, as well as Detroit, had registered their interest in selecting him prior to the draft.

However, the Jets took Texas A&M's Braden Mann and the Falcons opted for Sterling Hofrichter out of Syracuse.

However, Siposs eventually earned his opportunity and will now look to join Darren Bennett, Ben Graham, Sav Rocca and Chris Bryan in playing at both AFL and NFL level.

Siposs, 27, has spent the last two seasons in the United States, having been delisted by St Kilda after just 28 senior games at the end of 2015.

He committed to Auburn University ahead of its 2018 campaign, ranking inside the top-20 nationally for yards-per-punt (44.2 yards) throughout his freshman season with the college football powerhouse.