By Daniel Orme Manchester United flop Angel Di Maria has told Alejandro Garnacho to celebrate like Lionel Messi instead of his hero Cristiano Ronaldo. The Argentine forward has regularly emulated the five-time Ballon d’Or winner when finding the back of the net. Garnacho has often launched into Ronaldo’s ‘SIU’ celebration by jumping up into the air and then throwing his arms out when returning to the ground. That is not the only celebration that he has attempted to copy. The 19-year-old has also copied Ronaldo’s ‘sleeping’ celebration by closing his eyes and interlocking his hands over his che…