Inter Milan legend Walter Zenga admits retirement from playing hit him like a runaway train.

Zenga is currently coaching in the Middle East with Al Nasr.

"I sold vacuum cleaners. I had talent as a salesman. I was re-organising my life after discovering I'd understood nothing about the first 38 years. The footballer who thinks everything is owed to him and will carry on forever.

"What a huge mistake. As soon as you hang up your boots, some won't pick up the phone if you call and steal the money you thought was invested wisely."