With a host of players unavailable for selection against Queensland State League team Logan United and Hyundai A-League newcomers North Queensland Fury, the Mariners will trial six new players as their pre-season campaign gets underway.

Among the trialists will be two Serbians, one Welsh youth international, an Englishman and an Italian, and Mariners executive chairman Lyall Gorman is looking forward to seeing them in action.

"This trip provides us with a valuable opportunity to have a look at some players that may well be capable of stepping up to the Hyundai A-League next season, as well as providing a platform for our existing playing group to gain some base fitness and form ahead of the new campaign," Gorman said.

"During our break to date we've been exhaustively looking at all options available to us to bolster our playing squad for the new season and negotiations with several players are ongoing and progressing very encouragingly."

"In the spirit of the need for us to refresh our playing stocks, every squad member on show in Brisbane and Rockhampton has an opportunity to either push their claims for a starting XI berth or, for a chance to wear Mariners colours in the Hyundai A-League and we're hopeful and confident of taking many positives away from this trip."