straight to your inboxManchester United fans believe Antoine Griezmann would be a good summer signing for the Reds - but joked he would only serve as a back-up option to Mason Greenwood.The Frenchman has struggled at Barcelona since his £108million transfer from Atletico Madrid last summer and reports in Spain claim he is open to the idea of leaving the Spanish giants for a move to Old Trafford.Mundo Deportivo believe a move to United or Manchester City is a possibility for the 29-year-old with