Yisen Gard indeed came specifically to see Ian today.
This morning, Master Gossay discussed many task-related matters with him, entrusting him with quite a few things, one of which was to contact Ian and inform him that he had been selected for the exploration team and to relay some essential information he needed to know.
So the blond youth brought two guards with him to look for Ian, only to discover that the White Folks appraiser had already left the house and headed outside the city gates.
Yisen Gard felt that there was nothing secretive about looking for someone, so he straightforwardly asked The Gate Guard about Ian's whereabouts, tossing quite a few Talle in the process—not that The Gate Guard revealed Ian's location. It was mainly because Ian himself did not hide it; to attract potential enemies, he even intentionally mentioned his destination openly to others.