I would be surprised if any of them signed a new contract. Don't forget Marlon is getting on in years, he's just turned 31 and probably only has a few years left in the game. In his situation i would be looking to make the most of my time left. I think he could easily get more money than from us, but clubs will have to make the same ethical decision that we did in whether they can justify signing him to their fans. I would love him to stay for another year!
There doesn't seem much interest in Gunnar anymore, but i reckon someone like Leeds or Wolves may make a move as he's on a free.
Westy is gone as far as i'm concerned. He ranks well above many premiership goalkeepers in my eyes, MOTD has been dominated by GK howlers this year, and would be silly to stay.