England boss Gareth Southgate has told Dele Alli he needs to start winning trophies before he can be considered a world-class player.

The Tottenham midfielder has become a key figure for the national team less than two years after making his debut, and will be expected to shoulder even more responsibility in the wake of Wayne Rooney's international retirement.

But Southgate says the 21-year-old still has to prove himself.

"Dele is an exciting player and it's a great opportunity for him to kick on, but there's always a challenge," said the England manager, quoted in several national newspapers.

"He's a young player, but he's not a proven player. At the moment, he hasn't won anything.

"Like all young players, he's got to keep looking to improve. His goalscoring record over the past couple of years is phenomenal for a player who is not an out-and-out striker."