I dont think that modern football i think its Martinez football, which is why we are largely gash at the back. I think your missing the vairence point here mate, Jags is 34 by the start of next season i think it would be counter productive to flog him for 45 games. We clearly miss his organisational skills and steel in defense. He would add to that pool.
Additionaly there will be times, when the defense will have to sit deep, we had it for years with great success with Distin and Stubbs, Jags and Distin, certainly Dann and Jags would be an excellent combination. In more open games, Mori and Stones can play a part, im not wholly convinced that centre back is Stones best position if im being honest.
What it offer you is an opurtunity to have deep centre halves, an attacking therat from left right and centre, how many times were we stopped attacking through the Baines and Pienaar combo - when team cottoned on our attacking threat came down the left. Clearly this provides options when one route isnt working, left side is closed down, the right becomes an option, when both are closed down cenrally becomes an option, this is what good tactical coaching is all about. Enabling players to make decisions in terms of how best to break down opposition by making the best use of the space. At the same time to remaining solid. Its clearly suicide for each of those areas to attack at once, which was not what i was advocating.