AFP video grab showing Uruguayan national football team footballer Luis Suarez (bottom-C-with hood) leaving hospital after being operated on May 22, 2014 in Montevideo. Liverpool star Suarez is remaining upbeat after Uruguayan Football Association (AUF) said that his participation at the World Cup 'is not ruled out' following knee surgery on Thursday. AFP PHOTO / Nicolas GARCIA        (Photo credit should read Nicolas Garcia/AFP/Getty Images)