Given that counter-attacking is more effective on FM16, creating a Mourinho-style defense-first approach should be relatively simple for Chelsea. Chelsea have great individual quality, so I would keep it simple in terms of shape and TIs and look to mold the tactic a bit using roles.
A simple 4-1-4-1 counter can be very very effective. I can't check the game right now to see if Hazard and Pedro can do well in the ML and MR roles rather than AML and AML. If they can't, the shape could be adapted but pushing those two further forward compromises the defensive solidity.
So I would suggest:
Fluid
Counter
GK
FB-S CB-D CB-D FB-S
AM
W-S BBM AP-S W-S
DF
The roles would just need to be tweaked. Playing Rahman might be better as a WB-S, and both Pedro and Hazard might do better with different roles. If you are using more rounded players there, then Wide Midfielder can help defensively.