He hasn't got a plan when teams come on to us because :
a) We don't give a shit about other teams, how they play, what tactics they use etc
and
b) We only have a passing interest in what they do at set pieces
Because :
c) Our system is the best, trust the system, we will be brave, therefore we will win.
It's sad but true. If we spent a little time on the tactics of other teams, maybe we wouldn't throw away so many winning positions.