John Caudwell regrets loaning Boris Becker a million quid. The Phones 4U founder admitted he didn’t “have any happy memories” of lending the 54-year-old tennis champion a considerable bit of bunce after he faced bankruptcy after losing £35 million and is now serving a two and half year sentence and facing deportation to Germany after hiding £2.5 million worth of assets. The 69-year-old billionaire told The Times newspaper: “He’s not my mate. I met Boris through one of my companies, Signia Wealth [a private investment company]. He did some speaking for us and we were friendly. Boris then employ…