Here some of my advice if you want it:
That 7 months may have actually done good for you, because it seems like your vert numbers haven't really dropped. That said, you still took 7 months off, so I would work slowly back in.
1) Keep playing basketball, but definitely cut down the volume, because you'll be playing more and more as the season/tryouts get closer. You don't want to peak in the middle of your training.
2) Do more GPP work. I don't know the specifics of your jumper's knee, but if 7 months of rest didn't do anything for it, you should definitely do more GPP. That means for the first 2 months now, your warm-ups should be longer, including lots of lunges, squats, Cossack squats, glute activation work, etc. You should also try to get some extra GPP work in on days you don't workout.
3) More posterior chain work. This means when you squat, go FULL, calves touching hamstrings. I know that seems counter-intuitive to your jumper's knee, but going full will get way more hamstring activation. If you find that your knees go too far past your toes(not necessarily a bad thing, but can aggravate bad knees) then try pushing your knees out to the sides when you squat. This is kind of like Mark Rippetoe's squat style, but I would still keep a high bar position.
Ditto on GHRs and other PC exercises like Romanian deadlifts.
4) Ease into training with a linear periodization type of method. That is, go for lighter weight higher reps now, and then get progressively heavier as the season approaches. This will be ideal if you're doing more GPP in the beginning.
5) MORE soft tissue work/stretching. Like what creativelyric said, IT band/TFL are very important. Basketball is a game where you almost never exceed 90 degrees of hip flexion. This means that your psoas major is almost never used for hip flexion, and muscles that are supposed to be used as synergists in hip flexion have to pick up the slack. That would be your stuff like TFL, Illiacus, etc. They will get tight as hell from the work. I would go further than just a foam roller, and use a lacrosse ball or other harder massaging implements. Go to mobilitywod.com they have some good ideas on this kind of stuff.
Don't ignore your quads either, rectus femoris stretching plus massaging for the quads goes a long way. Work on your calves/achilles tendon too if you wear high tops.
