Doubt it.
Neville, Hitzlsperger and Mucha out;
Kone, Alcaraz, Robles, Deulefeu in;
Annual/contractual pay rises for existing squad;
Without even discussing the possibility of an improved deal for Baines and/or Felli, and possibly Mirallas and Coleman if they continue performing at their current high levels, it's safe to say the wages will not go down.
The best we can hope for is that the squad increases in size but less of the mega-high earners remain - this is why many are keen to shift Heitinga. If we can build a bit of depth whilst getting the AVERAGE wage down, that would be amazing, but the total wage bill won't be going anywhere other than up.