Liverpool manager, Jurgen Klopp, has admitted he is concerned about injuries to three of his players following their FA Cup defeat at Manchester United on Sunday. According to him, Darwin Nunez, Luis Diaz and Cody Gakpo all finished the game with knocks. With the trio set to travel for international duty, Klopp is worried about their fitness. Klopp told BBC Sport: “Now, the boys go on international duty. We hope they come back healthy. “Lucho [Diaz] felt his groin, Darwin hamstring, Cody twisted his ankle. They play again in four or five days, it’s crazy. “Hopefully we will finish the season i…