Pretty sure neither of them are leaving this summer; they both have two years left on their contracts this summer, and I can't see a scenario where Arsenal would entertain selling them. Neither of the players, to me, seem like guys who would force their way out like RVP or Fabregas, and I reckon that will be the end of that.
However, next summer, when both of them have only one year left on their contracts, I can well see a scenario where we will sell them both because neither of them are interested in signing new contracts.
I think both of them are quite disappointed by what has transpired here since they signed, and I think it will take a few big signings this summer to convince either of them that signing new contracts here will give them a realistic chance of winning the PL and seriously compete in the CL.
