By Scott Trotter Jamie Carragher has clarified that former Manchester United defender Gary Neville was not convinced by Andre Onana’s ability to save a penalty, rather than whether Liverpool should have been awarded it. Mohamed Salah dispatched the 84th-minute spot kick to earn the Reds a point at Old Trafford. The Egyptian’s strike brought the scores back level after Bruno Fernandes and Kobbie Mainoo netted in the second period to cancel out Luis Diaz’s opener. With the Red Devils attempting to hang on for victory, Aaron Wan-Bissaka took down Harvey Elliott in the box with Anthony Taylor poin…