I agree that Cisse is fantastic, but this is Newcastle here, they are NOT a big club still, even though they are certainly acting like one. Financially they are not in a position of having the luxury of keeping all of their highest performing players, they need to consistently buy low, sell high and then buy 3,4 players with that profit, until they're stable.
Carroll pretty much bankrolled Tiote, Cabaye, Cisse, Ben Arfa, Ba and Santon, with plenty of change... how much are those players worth altogether now? 100 million plus? easily.
If they sell just one of their 20 million plus players right now, that funds moves for a further, 2,3,4 players, who if they wheel and deal enough, will all come to the club for little and end up worth a lot, lot more.
Players available this summer who would be fairly cheap and have the potential to rise? well you've got the likes of Moses, Jarvis, Jamie O'Hara, Tim Ream, Sigurdsson, Pienaar, Anderson from us, Park ji sung who won't rise but is solid, Berbatov????, and then of course the French league which they know very well.
You have to realise that Newcastle have shot up because of buying low and selling high, they can't stop now, as soon as a club starts to act big, and make the 20-30 million pound signings, and hangs on to their star performers too long and doesn't sell at their peak, they soon shoot right back down. Football for a club like Newcastle is like investment banking, you've got to know when the price is right, it's vital... right now, I'd say Cisse and Cabaye are at their peak prices, they are over achieving massively, and their fees would be huge right now, but they could quite easily go from hero to zero in a month, they don't have the premier league history and expierience behind them to tell us otherwise, so they're risky assets.
Sell now, Cabaye or Cisse, or both, get the 20-30 million, and re-invest.