Checking TIF's list thread, I count 28 names in the current list (including unsigned who haven't stated a release) therefore we would have minimum 2 maximum 7 coming from outside the current full contract group to make a full squad (that's assuming the squad is 30-35 players)
Unsigned but still listed are
Lloyd
Robertson
McAuley
Stander
McDonald
Kuenzle
Makara
Tapine
Ala
Pulu
Without them signing we have
2 Props
3 Hookers
3 Locks
4 Backrowers
2 Scrumhalves
2 Flyhalves
0 Inside Backs
2 Outside Backs
Our big holes are at Tighthead, Inside Back (although I reckon Kuenzle and Makara are just waiting to be announced) and Bench/injury cover.
I think we need to have, as a priority
2 x Tighthead
Sign McAuley, Kuenzle, Makara and Pulu
Find cover at 10/15
Fill a bench with quality players
with 18 contracts being announced or rolled over, we're in for an announcement a day for quite a while IMHO!