MK14,12-16 /
“Go into the city, and a man carrying a jar of water will meet you. Follow him. 14 Say to the owner of the house he enters, ‘The Teacher asks: Where is my guest room, where I may eat the Passover with my disciples?’ 15 He will show you a large room upstairs, furnished and ready. Make preparations for us there.” 16 The disciples left, went into the city and found things just as Jesus had told them.

> OK -two opportunities i can see - which one is it?

Did Jesus had the mind and knowledge of God > So he just knew what is the future in a absolut perfect and detailed way? - And so he could tell about the men and the water....
OR
Did Jesus just car about each and every one around him, in the towns he visited, the village he went to, that he knew the people and their habits in such a personal way, that he knew this servant personally from a talk he had with him: So Jesus would  know when this servant would go out for water. He would know the servant master. Jesus also talked ones with this master about his upper room and Jesus maybe was even invited by this master to eat up their.
Jesus knew the people - but not the future.
Jesus knew the people so much because he loved them so much: HE WAS EVEN WILLING TO DIE FOR THIS SERVANT, CARRYING THE WATER BACK IN TO THE HOUSE OF HIS MASTER. THE LOVE OF JESUS WAS NOT JUST A WARM FEELING - BUT CARE

I like the second much more - but i don't know
:-)