Tottenham defender Jan Vertonghen admits there is some surprise about them reaching the Champions League semifinals.

Spurs are on cloud nine after dumping Manchester City out of Europe following a thrilling quarter final clash at the Etihad on Wednesday night.

It could have been a different story had Raheem Sterling's stoppage time goal not been ruled out for off-side after referee Cuneyt Cakir consulted VAR.

Vertonghen said: "It was crazy, madness, absolute madness. You don't know anything and it's a weird feeling.

"No-one was even appealing for offside, we all thought they had scored. Everyone was on the floor, but there was still two or three minutes left.

"So it was 'let's try and get the ball in the box and we will see whatever happens'.

"And then out of nothing, the referee came up with VAR. We didn't even know, that's what I'm saying."

Vertonghen is now relishing the chance to face his former club Ajax for a place in the Champions League final.

He added: "I'm not there yet with my head yet. I will sit down and read my texts and probably all the applications for tickets - and I will realise how big this game is.

"With Ajax, obviously it's crazy that they're there, an even bigger surprise that Ajax is there than us probably.

"I follow them every game, I speak to the people at the club and I know how good they are. I've watched every game.

"At the beginning in the Champions League they surprised everyone, but now it's not a surprise any more.

"They are of this level, they are of Champions League semi-final quality because knocking out both Real Madrid and Juventus is crazy.

"That's how it is. It will be an unbelievable battle between two positive sides."