Sevilla's Joris Gnagnon has apologised for his "heinous" tackle on Liverpool youngster Yasser Larouci which led to the Sevilla defender being sent off during a pre-season friendly in Boston. Gnagnon launched a wild challenge on the 18-year-old Larouchi, which launched him into the air and led him to being carried off on a stretcher during Liverpool's 2-1 defeat at Fenway Park on Sunday. "I would like to publicly apologise towards Liverpool, the family of the player and its supporters," Gnagnon posted on Twitter. "It was a heinous act on my part. Whatever the reason, it's not what should be seen on a football pitch. All my prayers are with the player and his family." Liverpool manager Juergen Klopp was watching his words in post-match interviews, but confirmed Larouci was "lucky" to have avoided a serious injury. "It is much too early in the season to create headlines by saying the things I think about the situation," the German manager told reporters. "Of course, how it always is with these things, we have to wait a little bit. "He hit him full throttle and, in that moment, (if it was) a little bit different position where he hit him, then it's done. He rolls...he is a sports boy so that was OK, nothing happened there." Sevilla boss Julen Lopetegui spoke to Klopp after the match to check on Larouci and admitted Gnagnon knew he made a mistake. "I was worried about the player, but I asked Jurgen and he said he's OK," the former Real Madrid manager said. "Gnagnon was very worried. He knows it was a bad tackle, a bad decision. The most important thing is for Larouci to be OK." (For more sports news and updates, follow Ahram Online Sports on Twitter at @AO_Sports and on Facebook at AhramOnlineSports.)