Liverpool legend Graeme Souness has questioned the future of Everton midfielder Dele Alli.

Alli, 25, joined the Toffees on deadline day from Tottenham just a few hours after Frank Lampard took the reins at Goodison Park.

Milton-Keynes born Alli arrived on a free transfer on January deadline day, but could cost the club £30million through appearance and performance bonuses.

Alli was an unused sub as he watched his side suffer a 2-1 defeat to West Ham at the London Stadium.

Souness said, "Dele Alli is a mystery to me. When he first broke into the team (at Spurs) I went thinking 'he's destined to be a top player'.

"He had a couple of years where he was good, getting goals, working his socks off for the team.

"But it's just all evaporated. Lots of serious managers have looked at him and made their mind up on him.

"For me, if I was advising him, I'd be saying 'you're now in the last chance saloon'.

"If it doesn't work out for him at Everton, where does he go after that? It's certainly not a big club.

"Everton are a big club, he should grab it with both hands. Whatever he's doing, and only he can answer it, it's one of two things.

"He's had his eye taken off the ball for whatever reasons, [or] he's lost interest in football, at his age, really?"