'She is saying that he is depressed after failing so badly with the England side and that he doesn't really know what he's doing,' said a source.
'Nancy is in denial, and part of that is that she can't bear the idea of being publicly humiliated again. At the moment she is trying to keep things together, but she's panicking.
'Every now and again she realises that Sven is serious and flies into a rage saying, "If he goes ahead and does this to me I will destroy him".'
The means of such destruction would be an autobiography to which Nancy, who is approaching 50 despite claiming to be much younger, is putting the finishing touches.
'For a long time now, Nancy's been hinting that she has Sven over a barrel,' said another source. 'We've always wondered why he stayed with her when he was so obviously running after different women behind her back.
'Knowing Sven it's a fair guess there have been other affairs we don't know about, but she has also had access to all the backstage antics surrounding the England football team over the past five years. What did Sven say about the players behind their backs? What really went on at the FA during the Faria Alam scandal?
'No wonder Sven is being nice to her. Nancy's sitting on a pile of dynamite and he has just handed her a box of matches.'