If we get him back fit we should manage him like Spurs did with Ledley King; one game per week max, no training, just gym work but no running, nothing that could cause the calf problem to flare up.
Maybe even just save him for away games or big games.
Sadly nothing will stop a calf muscle tearing. If you just happen to be vulnerable to such problems then no amount of rest will guarantee non injury.
I suffered terribly with calf problems from 30 onwards and had to admit, and after reading several medical articles, that ageing is the underlying cause of muscle shortening and subsequent tears, and no amount of rest turns back the clock.
My fear and belief, and I don't enjoy saying this, is that Kompany will play less that 25% of games going forward, and that he will retire in no more than 2 years from now.