Zak was an addition to David Artell’s squad ahead of the 2025-26 season.

The 22-year-old Australian-born midfielder makes the move to Blundell Park on a free transfer after six years with Blackburn Rovers.

Gilsenan has had a unique career path as a young footballer, having previously spent time on the books of FC Barcelona between 2012-2014 at the world-renowned La Masia Academy, before moving to Premier League giants, Liverpool.

Gilsenan joined Blackburn Rovers academy as an under 16 and went on to make over 75 appearances for their u18s and u23s before featuring for their First Team.

The Australian-born midfielder is eligible to play for the Republic of Ireland and has made four appearances between the u19s and u21s, scoring twice.