RealLifeHeroes on Instagram: "Despite having just three days to prepare for the Premier League clash against Manchester City, Mohamed Salah and Virgil van Dijk spent the morning visiting six-year-old Liverpool fan Isaac. Isaac was born with the rare genetic disorder Wolf-Hirschhorn syndrome, which means he develops at a slower rate than other children his age. Van Dijk and Salah heard about Isaac's story and decided to surprise him. Isaac was playing Snakes and Ladders when Van Dijk approached h