This is 2016 and it really does not have to be anymore for Kompany and any player in this situation to face the problem head on by searching and getting a competent specialist that will not only assess, diagnose and treat but will also prognosticate and give him a full account of what his injury situation really is, then he and the club can disclose it to the public if they want and he can finally decide on what he wants to do with his career in light of the reality.
All these vague unsubstantial hero talk about ''never given up'' and ''I will come back strong'' does not address the fact that there is a problem and it needs sorted out. So although this persistent lapses and recurrence is a shame for him, his family and for all the other parties involved including Manchester City and Belgium, my advice is that he seeks a specialist or better assistance over the summer and find out where he stands.