BOX

mass-energy equivalence seen in physics, which led to Albert Einstein’s classic theory of E=mc2

For Poch, energia universal is a real life force, with a strong element of spirituality. Essentially, it is an energy, not solely of the body, but of the mind as well, which can also have positive psychological benefits, with which he imbues his players.

And today is the litmus test, which will be watched by United’s owners

in Florida. The clash with Ole Gunnar Solskjaer will be fascinating, not least because Poch will be taking on a potential United boss, shadowily advised by Sir Alex Ferguson.

The irony is that United are in a win-win situation. If Poch claims victory, the Reds will be even more convinced he really is their man.

If Ole wins, they’re still on the up, as is his stock, should Poch say no.

But do you really think he would?