I see.
So, Jose's never bought a dud. Jose's never spent huge sums on players who never even played for his first teams, but sat on their arses raking in the spondulicks? Jose never had his side turn sour on him?
Our own players never gave less than 100% for martinez?
Of cos he did, but you're moving away from the point here.
What I'm saying is, if you are worth billions, surely spending 15m on the best manager in the league is not going to bankrupt you or the club at any point.
As for incoming players demanding, it's very far fetch for them to compare wages with the manager.
Mourinho is paid tens of million at most club he manage with success. I've never read any report of him buying TOP players demanding for wages that is on par with him. Costa? Fabregas? Hazard? Are they on 15m a year?