After you help rescue Gallien, Meffrid gives you a letter to give to Gundobald.
This quest is available if you have completed the quest He Ain't Heavy.
Starting the Quest
Talk to Meffrid in Quarrymill in the South Shroud to begin the quest.
Show Meffrid's Recommendation to Gundobald
Go back to Southern Thanalan. Talk to Gundobald and hand over the letter to complete the quest.
Next Main Scenario Quest
After you complete the quest, talk to Gundobald to accept the next quest: The Bear and the Young'uns' Cares.