digitalspy.co.uk: Mitch Winehouse has claimed that his daughter Amy once turned down a duet with Robbie Williams. The former cab driver alleged that the ‘Rehab’ singer was asked to collaborate with Williams, but rejected the offer out of hand. While presenting his online show Mitch Winehouse’s Showbiz Rant, the 58-year-old said: “I’m a bit worried about Robbie, next thing he’ll be wanting to make a record with Amy. That’s preposterous.” He added: “Actually he said that once… he wanted to do a record with Amy. Amy said, ‘Are you f**king joking?’”