Now did that happen before or after jiraiya met naruto already. I always thought that Kekkashi just wanted naruto to learn the basics and not bother with him because Naruto having that seal on him couldnt do anything, so Kekkashi probably didnt see the seal just wrote him off. Even Jiraiya didnt see the seal until naruto took his shirt off.
Naruto meeting Jiraiya was all DUE to luck.
Jiraiya wouldn't know who the freck this blond hair kid was untill he see the marking on his belly.
and it was Naruto who was chasing the super-pervert to train him
not the other way around