Lewis Koumas’ brother has sent a message to the Liverpool starlet on Twitter after watching the 18-year-old forward last night against Southampton. The Reds’ academy graduate was named in Jurgen Klopp’s starting XI to face the Saints as Koumas repaid the favour in a huge way by scoring on his professional Liverpool debut. With fellow academy star Jayden Danns adding two more goals in the second-half, it was another magical night for Liverpool’s youth system just a few days after the Reds won the League Cup having played five academy players. Lewis Koumas’ brother sends message on social media …