Mayo's Oisín Mullin is set to join AFL club Geelong Cats as an international rookie.

RTÉ Sport understands that the 21-year-old will travel out to Australia later this month to begin a two-year contract, as originally reported by

Mullin's departure will be a huge blow for Mayo coming after the disappointment of another All-Ireland final loss on 11 September.

Mullin made his mark for the Green and Red in 2020, impressing in both league championship and was rewarded with an All-Star, while also being named Young Player of the Year.

He is in the running for similar recognition this year after some strong performances in the Connacht championship. A quad injury saw Mullin miss the All-Ireland semi-final win over Dublin but he recovered to take his place in the decider against Tyrone.

His club Kilmaine are through to county intermediate semi-final and face Mayo Gaels this weekend.

Covid-19 saw Mullin miss out on a two-week AFL trial in April 2020, but he now joins Fermanagh's Ultan Kelm and Fionn O'Hara from Westmeath as Irish rookies hoping to make their mark in the professional game.

James Horan and Mayo have lalready turned their attentions towards 2022, but Mullins's absence, togther with the spirit of adventure he brings to his game, will be keenly felt within the county ahead of another quest to finally bring Sam Maguire home.