Both is the easy answer...but right now the biggest need is in the back court so I would say Sampson. Plus as others have mentioned, Sampson will likely be a 4 year contributor.
I think our biggest needs are equal if we're breLimg it down in terms of frontcourt and backcourt. We have one player in each court that we can count on, and even that is pretty ambitious considering the last two seasons.
This team needs offense. Jordan will score, but he's one guy. Obekpa will probably score a little, but unless he really works on his entire offensive game this summer, we really can't expect more than 8 or 9 points per game.
If you break it down by position, IMO, it looks like this now:
PG Jordan - 20 ppg
SG Doughty - 9.5 ppg
SF Alibegovic - 8 ppg
PF Williams - 11 ppg
Obekpa - 8 ppg
What we're hoping for is this:
Jordan 18 ppg
Sampson 13 ppg
Williams 9 ppg
Diallo 11 ppg
Obekpa 8 ppg