New Delhi [India], September 10 (ANI): Austria head coach Ralf Rangnick took a dig at his former side, Manchester United, by reaffirming his stance that he made two years ago about the club needing an "open heart operation."In the 2021-22 season, Rangnick took charge of Manchester United on an interim basis after Ole Gunnar Solskjaer was sacked from his position as head coach. Even though Rangnick's stint lasted for six m