"I would still be very surprised if Dele Alli can come back to the top level. When players have been out for so long, I would be very, very surprised if there was a comeback there. He might play at a lower level," ex-Spurs and Manchester United striker Sheringham told Genting Casino.
"I hear he's been through a few troubles but it's tough when you haven't been playing for a few years. He was an outstanding talent coming through. Everyone comes to fruition at different times.
"He probably just came to fruition at a young age rather than maturing and doing well at an old age. He came flying on the scene and everyone thought big things about him but wasn't to be."