By Jude Summerfield Andre Onana has claimed Manchester United would have enjoyed a more successful second season under manager Erik ten Hag had the squad not been ravaged by injuries. The Red Devils will bid to save their campaign somewhat on Saturday afternoon in the FA Cup final against Manchester City in a repeat of last year’s encounter at Wembley Stadium at the same stage of the competition. The Cityzens won that fixture 2-1. Reports have claimed Ten Hag is due to be dismissed from the Old Trafford dugout after United’s last game of the season, but Onana claimed the Dutchman has had his h…