England and Tottenham Hotspur star Dele Alli. Pic/Getty Images

Dele Alli insists England are well prepared for the World Cup and the target is to "achieve greatness" in Russia. The Three Lions play their final warm-up game against Costa Rica at Elland Road tonight before flying out to their base in Repino. While Gareth Southgate's youthful squad are unlikely to be crushed by the weight of expectation experienced by previous players, Alli believes there is something special about the current crop.