Hmm... sorry? I'm not sure If I understood, ; 3 ; )
anyway the 10th villager you can get only be campsite (if you play game w/ the villager n stuff) or when you visit someone's town, the last villager who moved will come to your town. if she/he was voided.You may also invite the villager who is about to move, when he/she is w/ boxes,
a 10th villager won't appears w/ you dont play w/ someone or have campsite.
at least that's what i know !! good luck anyway