Dear Kendall Jenner ...
Sick of sharing Justin Bieber with your sister?
Well, meet Chicago Bulls small forward Doug McDermott.
He's 6'8". He's rich. And he's down to hook up!
Check out this clip of Doug in Bev Hills -- raving about the Kardashian family ... and Kendall in particular.
In fact, the guy hit TMZ Sports with the task of "hooking it up" ... so, here ya go!!!
Ball's in her court now.