As far as I'm aware, Paulo's contract expires at the end of the season - so he'll be off I think.
I think Ben-Haim may stay to be honest, remember Avram has said he likes a bigger squad than Jose did, and if Ivanovic is considered our "defensive right-back", then it leaves us with just three centre-backs.
If Ben-Haim does go with Paulo, I'd expect a new RB or CB to be signed, or Mancienne to step up (which I don't think he will).
As for a new striker, I think its fairly obvious Pizarro and/or Shevchenko will go so any one of Villa, Huntelaar or Benzema would be great. Perhaps Malouda could be used as bait to get Benzema from Lyon?
If Sinclair is going to step up and be a first team player here, I'd expect some progress with him before the season finishes. He was perhaps unfortunate as I thought he played very well vs Liverpool in the CC - but hasn't had a look in since. If he doesn't, I can see him being sold.
The only other position perhaps necessary would be midfield. We say it every year, but this could be Maka's last proper season at 35. Iniesta and van der Vaart were linked in January so perhaps someone like that will come in, or even Samir Nasri from Marseille. Although if we go back to 4-4-2 which I think we will to accomodate Didier/Nico, perhaps a CM won't be necessary.
As for Modric, £20million for someone playing in the Croatian league? No thanks.
The key to our success next year will be holding onto Frank, Didier and Essien - if we can, then we've got a big chance next year.
Two or three in, two or three out for me.
GK's: Petr, Carlo, Hilario
RB's: Belletti, Ivanovic
LB's: Bridgey, Ash
CB's: Riccy, JT, Alex, Ben-Haim
DM's: Mikel, Makelele (?)
CM's: Essien, Ballack, Frank, Nasri (+ SWP)
W: Joe, SWP, Kalou, Sinclair
F: Drogba, Anelka, Benzema, Di Santo (+ Kalou)
That squad gives us lots of choices for either 4-4-2 (flat and diamond), and 4-3-3.