He told beIN Sports: “[What] Was the first thing [Jurgen] Klopp did with Liverpool? He bought a good defence. He bought a goalkeeper and good defenders because everything starts there.
“And I think Man United should start there as well. I saw something amazing with Leipzig and Dayot Upamecano.
“He was outstanding [against Atletico Madrid]. He can play football, he's hard in the tackle. Defence is what I would start if I was Man Utd."