Rickon 1, Bran 1, Jon Snow 1, Arya 1 :that's 4 direwolves for the Starks.
As long as 1 of them becomes the next lord/lady of Winterfell i'm fine with it.
I could even live with the Karstark girl who married the Thenn.
I don't want Sansa (her mother's southron influences where bad enough imo).
Out of those i think it most likely Rickon will be it. Direct male line, no cripple, possible of making heirs, has a direwolf, knows Winterfell (and part of it's secrets), is known To Manderly (info he's got from the mute boy makes it clear enough for him), with Manderly being one of the most important Houses in the North.
Second is Jon Snow (Robb's decision, Mormonts, Blackfish missing, NW seemingly beyond repair, only his vow may keep him away).
Third is unfortunately Sansa (Southerners will push her, has a good claim, known to be alive BUT missing. Don't misunderstand, whilst i'm still no big of Sansa, i don't hate her either, it's just that she is too much a Tully, and i don't want her as he Lady of Winterfell. I feel the north should belong to the North Gods, and i'm actually somwhat miffed at Ned, for actually making a shrine so his wife could pray to her lousy 7. (says some1 who in RL doesn't truly belief in any god/religion)